HomeMy WebLinkAbout2025-03-14 ACHD Staff Report Miranda Gold,President
Alexis Pickering,Vice-President
ACHDKent Goldthorpe,Commissioner
Dave McKinney,Commissioner
/4419L Patricia Nilsson,Commissioner
Date: March 5t", 2025
To: Laren Bailey, Conger Group
Staff Contact: Matt Pak, Planner
Project Description: Adero Park
Trip Generation: The residential lots in this development are estimated to generate
2,448 vehicle trips per day, 246 vehicle trip per hour in the PM peak hour, based on
the traffic impact study. ACHD is unable to provide trip generation rates for the
commercial lots in this development at this time.
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Area Roadway Level of ■ Planned
Service
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D• area roadways
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Performance Measures
Area •.• meet ACHD's
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improvements?
Is Transit Available?
Comments:
*The Livable Street Performance Measures rating for pedestrians on Ten Mile Road
and Gondola Drive abutting the site is evaluated to be at LTS 2 and LTS 1
(respectively) with the required improvements associated with this development.
**The Livable Street Performance Measures rating for cyclists on Ten Mile Road and
Gondola Drive abutting the site is evaluated to be at LTS 3 and LTS 1 (respectively)
with the required improvements associated with this development.
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Ada County Highway District•3775 Adams Street•Garden City,ID•83714• PH 208387-6100•FX 345-7650•www.achdidaho.org
Development Services Department
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ACHD
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Project/File: Adero Park/ MPP25-0004/ H-2024-0068
This is a rezone, preliminary plat and development agreement modification application
to allow for the development of a 352-lot subdivision consisting of 270 single-family
lots, 44 commercial lots, 4 light office lots, 2 common drives, 31 common landscape
lots and 1 park on 69.18 acres.
Lead Agency: City of Meridian
Site address: West side of McMillan Road, north of Ten Mile Road
Staff Approval: March 5th, 2025
Applicant: Laren Bailey
Conger Group
4824 W Fairview Ave
Boise, ID 83706
Staff Contact: Matt Pak
Phone: 208-387-6171
E-mail: mpak achdidaho.org
Report Summary:
ACHD Planned Improvements............................................2
Level of Service Planning Thresholds.................................2
A. Site Specific Conditions of Approval ............................3
B. Vicinity Map.................................................................5
C. Site Plan......................................................................6
D. Traffic Impact Study—Summary and Findings.............7
E. Findings for Consideration.........................................10
F. Policy.........................................................................14
G. Attachment 1 —Traffic Impact Study..........................25
H. Attachment 2 — MUP-02.............................................28
I. Standard Conditions of Approval ...............................29
J. Conclusions of Law....................................................29
Request for Appeal of Staff Decision ................................30
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MPP25-0004 / H-2024-0068
ACHD Planned Improvements
1. Capital Improvements Plan (CIP)/Five Year Plan (FYP):
• The intersection of McMillan Road and Black Cat Road is scheduled in the FYP to be
reconstructed as a multi-lane roundabout with 2-lanes on the north leg, 2-lanes on the south,
1-lane east and 1-lane on the west leg in 2029.
• McMillan Road is listed in the CIP to be widened to 3-lanes from Black Cat Road to Ten Mile
Road between 2031 and 2035.
• McMillan Road is listed in the CIP to be widened to 3-lanes from Ten Mile Road to Linder
Road between 2031 and 2035.
• Black Cat Road is listed in the CIP to be widened to 5-lanes from McMillan Road and US
20/26 (Chinden Boulevard) between 2036 and 2040.
• The intersection of US 20/26 (Chinden Boulevard) and Black Cat Road is listed in the CIP to
be widened to 5-lanes on the north leg, 5-lanes on the south, 7-lanes east, and 7-lanes on the
west leg, and signalized between 2036 and 2040.
Level of Service Planning Thresholds
1. Condition of Area Roadways
Traffic Count is based on Vehicles per hour(VPH)
Roadway Frontage Functional PM Peak Hour PM Peak Hour
Classification Traffic Count Level of Service
* McMillan Road N/A Minor Arterial 685 Better than "E"
* Ten Mile Road 1,507-feet Minor Arterial 783 Better than "E"
* Gondola Drive 334-feet Residential 101 Better than "D"
Collector
Bolsena Way 590-feet Local N/A N/A
* Acceptable level of service for a three-lane minor arterial is "E" (720 VPH).
* Acceptable level of service for a five-lane minor arterial is "E" (1,540 VPH).
*Acceptable level of service for a two-lane collector is "D" (425 VPH).
* ACHD does not set level of service thresholds for local streets.
2. Average Daily Traffic Count (VDT)
Average daily traffic counts are based on ACHD's most current traffic counts.
• The average daily traffic count for McMillan Road west of Ten Mile Road was 12,003 on
November 16th, 2023.
• The average daily traffic count for Ten Mile Road south of US 20/26 (Chinden Boulevard)was
20,182 on August 22nd, 2024.
• The average daily traffic count for Gondola Drive west of Bolsena Way was 1,699 on
November 16th, 2023.
• There are no current traffic counts for Bolsena Way.
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MPP25-0004 / H-2024-0068
A. Site Specific Conditions of Approval
1. Prior to submitting plans or a final plat that contains any commercial lots, submit a traffic impact
study to address the potential impacts of the commercial lots. Coordinate the scope of work with
Planning Review staff. Additional conditions of approval may be required based on the findings of
the updated traffic study.
2. Construct a southbound right-turn lane on Ten Mile Road at Gondola Drive/Malta Drive when
Gondola Drive/Malta Drive is constructed to intersect Ten Mile Road.
3. Replace or repair any damaged or deficient transportation facilities on Ten Mile Road, Gondola
Drive and Bolsena Way abutting the site, as determined by ACHD staff, and consistent with the
current version of PROWAG.
4. Terminate San Vito Way at the site's south property line with vertical curb, gutter, an 8-foot wide
landscape strip and a 10-foot wide multi-use pathway.
Close the existing pedestrian ramp at the northwest corner of the San Vito Way and Gondola Drive
intersection. Transition a 10-foot wide multi-use pathway into the existing 10-foot wide asphalt
pathway on Gondola Drive.
5. Construct Vicenza Way to intersect Gondola Drive/Malta Drive located 637-feet east of San Vito
Way.
6. Construct Gondola Drive/Malta Drive as a 3-lane collector (either a 47-foot wide or 37-foot wide
street section) at its intersection with Ten Mile Road within the influence area of the intersection.
West of the intersection, taper the roadway to 2 lanes, as described below.
7. Construct Gondola Drive/Malta Drive as a 36-foot wide residential collector street section with 2-
travel lanes, on-street bike lanes, vertical curb, gutter, a minimum 8-foot wide landscape strip and
5-foot wide detached concrete sidewalk.
OR
Construct Gondola Drive/Malta Drive as a 26-foot wide residential collector street section with 2-
travel lanes, vertical curb, gutter, a minimum 8-foot wide landscape strip and a minimum 10-foot
wide multi-use pathway on both sides of the roadway.
Transition the multi-use pathway to on-street bike lanes per MUP-02 (Attachment 2), at the
intersection of Gondola Drive/Malta Drive and San Vito Way.
8. Construct a portion of Gondola Drive/Malta Drive on the adjacent parcel to the south
(#S0427438410).
Coordinate with the adjacent property owner to the south to dedicate right-of-way necessary to
allow Gondola Drive/Malta Drive to be constructed in the proposed location. Provide written
documentation of the agreement to ACHD Development Review prior to the approval of civil plans.
9. Extend San Vito Avenue and Fairborn Avenue into the site.
10. Construct an entrance roadway, Adero Park Avenue, as a 50-foot wide local street section with two
21-foot wide travel lanes, a 8-foot wide center landscape median, curb, gutter, an 8-foot wide
landscape strip and 5-foot wide detached concrete sidewalk.
Plat the center landscape median on Adero Park Avenue as right-of-way owned by ACHD. Enter
into a license agreement with ACHD if landscaping is desired within the island.
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MPP25-0004 / H-2024-0068
11. Construct the internal local streets as 27-foot wide street sections with curb, gutter, and 5-foot wide
attached or detached concrete sidewalk internal to the site. For detached sidewalk, construct a
minimum 8-foot wide landscape strip between the back of curb and the street edge of sidewalk.
Parking is restricted on one side of the 27-foot wide street sections. Install "NO PARKING" signs
on one side of the streets. Coordinate a signage program with Development Review staff. Provide
written fire department approval for the reduced street sections.
12. Construct a cul-de-sac turnaround at the terminus of Vogelsang Place with a minimum turning
radius of 50-feet.
13. Construct Gondola Drive/Malta Drive to intersect Ten Mile Road, located 2,460-feet north of
McMillan Road and in alignment with Malta Drive, on the east side of Ten Mile Road.
14. Construct Adero Park Avenue to intersect Gondola Drive/Malta Drive, located 688-feet north of
Vicenza Way.
15. Close the two existing driveways from the site onto Ten Mile Road with curb, gutter, sidewalk and
landscaping.
16. No new driveways onto Ten Mile Road are approved as part of this application.
17. Redesign Gondola Drive/Malta Drive, Vogelsang Place and Vicenza Place to reduce the length of
the roadways or to include the use of passive design elements. Submit a revised preliminary plat
showing the redesigned roadways for review and approval prior to plan approval and ACHD's
signature on the first final plat.
Speed humps/bumps and valley gutters will not be accepted as traffic calming.
18. Other than the access specifically approved with this application, direct lot access is prohibited to
Ten Mile Road, Gondola Drive, San Vito Way and Vicenza Way and shall be noted on the final plat.
19. Submit civil plans to ACHD Development Services for review and approval. The impact fee
assessment will not be released until the civil plans are approved by ACHD.
20. There will be an impact fee that is assessed and due prior to issuance of any building permits. The
assessed impact fee will be based on the impact fee ordinance that is in effect at that time. The
impact fee assessment will not be released until the civil plans are approved by ACHD.
21. Comply with all Standard Conditions of Approval.
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MPP25-0004 / H-2024-0068
B. Vicinity Map
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MPP25-0004 H-2024-0068
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6 Adero Park/
MPP25-0004 / H-2024-0068
D. Traffic Impact Study - Summary and Findings
1. Traffic Impact Study
CR Engineering, Inc. prepared a traffic impact study (TIS)for the proposed Adero Park Subdivision.
An executive summary of the findings as presented by CR Engineering can be found as
attachment 1. ACHD has reviewed the submitted traffic impact study for consistency with ACHD
policies and practices and may have additional requirements beyond what is noted in the TIS. Staff
comments and recommendations on the submitted traffic impact study can be found below.
a. Policy:
Mitigation Proposals: Mitigation recommendations shall be provided within the report. At a
minimum, for each roadway segment and intersection that does not meet the minimum
acceptable level of service planning threshold or v/c ratio, the report must discuss feasible
measures to avoid or reduce the impact to the system. To be considered adequate, measures
should be specific and feasible. Mitigation may also include:
• Revision to the Phasing Plan to coincide with the District's planning Capital Projects.
• Reducing the scope and/or scale of the project.
Alternative Mitigation Measures: 7106.7.3 states that if traditional mitigation measures such
as roadway widening and intersection improvements are infeasible as determined by ACHD,
the TIS may recommend alternative mitigation measures. Alternative mitigation measures shall
demonstrate that impacts from the project will be offset.
• If the impacted roadway segments and/or intersections are programmed as funded in
the Integrated Five Year Work Plan (IFYWP) or the Capital Improvements Plan (CIP);
no alternative mitigation is required.
• If the impacted roadway segments and/or intersections are not programmed in either
the IFYWP or the CIP; the applicant may (i) analyze the shoulder hour, defined as the
hour prior to after the determined peak hour within the two-hour peak period, (sometime
analyzed as hour before or after peak period) and (ii) provide a safety analysis to
determine alternative mitigation requirements.
o If the impacted roadway segments and intersections meet the minimum acceptable
level of service planning thresholds in the shoulder hour, the applicant may suggest
feasible alternative mitigation measures beyond improvements from District policy,
such as: off-site sidewalks, off-site bike facilities, connectivity, safety improvements,
etc. within 1.5 miles of the proposed development.
o If the shoulder hour planning thresholds are exceeded the applicant may request to
enter into a Development Agreement and pay into the Priority Corridor Fund an
amount determined by the ACHD to offset impacts from the project.
• Alternative Mitigation may also include:
o Revision to the Phasing Plan to coincide with the District's future Capital Projects.
o Reducing the scope and/or scale of the project.
Level of Service Planning Thresholds: District Policy 7205.3.1 states that Level of Service
Planning Thresholds have been established for principal arterials and minor arterials within
ACHD's Capital Improvement Plan and are also listed in section 7106. Unless otherwise
required to provide a Traffic Impact Study under section 7106, a proposed development with
site traffic less than 10% of the existing downstream roadway or intersection peak hour traffic
shall not be required to provide mitigation for a roadway or intersection that currently exceeds
the minimum acceptable level of service planning threshold or V/C ratio.
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MPP25-0004 / H-2024-0068
b. TIS Findings: Staff has reviewed the submitted traffic impact study (TIS)
US 20-26 (Chinden Boulevard) /Ten Mile Road
• 2030 Background Traffic Conditions
The proposed Fast Eddy's store/gas station is planning to improve the north leg of the
Chinden Boulevard and Ten Mile Road intersection for site access. The existing signal
and signal timing will need modifications to mitigate the impacts generated by the
proposed Fast Eddy's store/gas station.
The queue length in the northbound right-turn lane is anticipated to extend 100-feet
beyond the 450-foot striped right-turn lane during the AM peak hour. There is additional
available storage beyond the northbound right-turn lane.
The queue length in the eastbound right-turn lane is anticipated to extend 100-feet beyond
the 350-foot striped right-turn lane during the PM peak hour. The eastbound right-turn lane
cannot be extended as there is an existing driveway to the west.
• 2030 Total Traffic Conditions
The queue length in the northbound right-turn lane is anticipated to extend 175-feet
beyond the 450-foot striped right-turn lane during the AM peak hour. There is additional
available storage beyond the northbound right-turn lane.
The queue length in the eastbound right-turn lane is anticipated to extend 100-feet beyond
the 350-foot striped right-turn lane during the PM peak hour. The eastbound right-turn lane
cannot be extended as there is an existing driveway to the west.
Malta Drive /Ten Mile Road
• 2030 Total Traffic Conditions
The intersection is anticipated to warrant a southbound right-turn lane. This is warranted
by 2029 when approximately 220 lots are constructed and occupied, generating 153 AM
peak trips and 209 PM peak trips.
c. Staff Comments/Recommendations: Staff comments are provided by District Traffic Services
and Development Review staff.
US 20-26 (Chinden Boulevard) /Ten Mile Road
The TIS recommends the applicant extend the northbound right-turn lane 175-feet beyond the
existing 450-foot striped right-turn lane at the US 20-26 (Chinden Boulevard)and Ten Mile Road
intersection. However, Ten Mile Road is already improved with 5 to 6-travel lanes at the
intersection. Additionally, the percent site traffic at this intersection is approximately 2%.
Therefore, consistent with ACHD's Level of Service Threshold policy the applicant should not
be required to extend the northbound right- turn lane as part of this development application.
Malta Drive / Ten Mile Road
The applicant should be required to construct a southbound right-turn lane at the intersection of
Malta Drive and Ten Mile Road.
Commercial Lots
The traffic impact study did not include the 44 commercial lots of the proposed as part of this
subdivision. Because of this, ACHD is unable to provide information regarding the full potential
impacts of the development. Additionally, the proposed driveway onto Ten Mile Road between
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MPP25-0004 / H-2024-0068
Malta Drive and McMillan Road will not be approved as part of this application, since an analysis
to demonstrate the need was not included as part of the study.
Prior to submitting plans for final platting that contains any commercial lots, the applicant should
be required to submit a traffic impact study to address the potential impact of the commercial
lots. The scope of work for the study should be coordinated with ACHD's Planning Review staff
and at a minimum should include an access analysis for any driveways proposed onto Ten Mile
Road and a signal warrant analysis for the Malta/Ten Mile Road intersection. Additional
conditions of approval my be required based on the findings of the updated traffic study.
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MPP25-0004 / H-2024-0068
E. Findings for Consideration
1. Ten Mile Road
a. Existing Conditions: Ten Mile Road is improved with 5-travel lanes, on-street bike lanes,
vertical curb, gutter, a 6-foot wide landscape strip and 5-foot wide sidewalk abutting the site.
There is 85 to 126-feet of right-of-way for Ten Mile Road (47 to 65-feet from centerline).
b. Applicant Proposal: The applicant is not proposing any additional dedication of right-of-way or
frontage improvements to Ten Mile Road abutting the site.
c. Staff Comments/Recommendations: Consistent with the recommendations and findings of
the Traffic Impact Study, the applicant should be required to construct a southbound right-turn
lane on Ten Mile Road at the intersection of Gondola Drive/Malta Drive.
Ten Mile Road is fully improved abutting the site. Therefore, no additional frontage
improvements to Ten Mile Road should be required as part of this application.
Consistent with District Minor Improvements policy, the applicant should be required to replace
or repair any damaged or deficient transportation facilities on Ten Mile Road abutting the site,
as determined by ACHD staff, and consistent with the current version of PROWAG.
2. Gondola Drive
a. Existing Conditions: Gondola Drive is improved with 2-travel lanes, vertical curb, gutter, a 10-
foot wide landscape strip and a 10-foot wide detached asphalt pathway abutting the site. There
is 54-feet of right-of-way for Gondola Drive (27-feet from centerline).
b. Applicant Proposal: The applicant is not proposing any additional dedication of right-of-way
or frontage improvements to Gondola Drive abutting the site.
c. Staff Comments/Recommendations: Gondola Drive is fully improved abutting the site.
Therefore, no additional dedication of right-of-way or frontage improvements should be required
as part of this application.
Consistent with District Minor improvements policy, the applicant should be required to replace
or repair any damaged or deficient transportation facilities on Gondola Drive abutting the site,
as determined by ACHD staff, and consistent with the current version of PROWAG.
3. Bolsena Way
a. Existing Conditions: Bolsena Way is improved with 2-travel lanes, vertical curb, gutter, and 5-
foot wide sidewalk abutting the site. There is 50-feet of right-of-way for Bolsena Way (25-feet
from centerline).
b. Applicant's Proposal: The applicant is not proposing any additional dedication of right-of-way
or frontage improvements to Bolsena Way abutting the site.
c. Staff Comments/Recommendations: Bolsena Way is fully improved abutting the site.
Therefore, no additional dedication of right-of-way or frontage improvements should be required
as part of this application.
Consistent with District Minor Improvements policy, the applicant should be required to replace
or repair any damaged or deficient transportation facilities on Bolsena Way abutting the site, as
determined by ACHD staff, and consistent with the current version of PROWAG.
4. Gondola Drive/Malta Drive - Internal Collector Roadway
a. Existing Conditions: There are two collector roadways stubbing to the site's south property
line, San Vito Way and Vicenza Way.
10 Adero Park/
MPP25-0004 / H-2024-0068
There is an existing pedestrian ramp at the northwest corner of the San Vito Way and Gondola
Drive intersection.
There are no public streets within the site.
b. Applicant's Proposal: The applicant is proposing to terminate San Vito Way at the site's south
property line with vertical curb, gutter, an 8-foot wide landscape strip and a 10-foot wide
detached multi-use pathway. The applicant is proposing to close the existing pedestrian ramp
at the northwest corner of the San Vito Way and Gondola Drive intersection and transition to a
proposed 10-foot wide multi-use pathway into the existing 10-foot wide asphalt pathway on
Gondola Drive.
The applicant is proposing to extend Vicenza Way into the site, to intersect Gondola Drive/Malta
Drive, a collector roadway, located 637-feet east of San Vito Way (measured centerline-to-
centerline).
The applicant is proposing to construct Gondola Drive/Malta Drive as a 31-foot wide collector
street section with vertical curb, gutter and an 8-foot wide landscape strip on both sides of the
roadway. The applicant is proposing to construct on-street bike lanes with 5-foot wide detached
concrete sidewalk on one side of the roadway and a 10-foot wide detached multi-use pathway
on the other side.
The applicant is proposing to construct a portion of Gondola Drive/Malta Drive on the adjacent
parcel to the south (#S0427438410), as shown below.
Parcel 45447438410
c. Staff Comments/Recommendations: The applicant's proposals for San Vito Way and
Vicenza Way meet District policy and should be approved, as proposed.
At the intersection with Ten Mile Road the applicant should be required to construct Gondola
Drive/Malta Drive as a 3-lane collector, either a 47-foot wide street section with on-street bike
lanes with sidewalks or as a 37-foot wide street section with multi-use pathways, tapering to a
2-lane collector as described below outside the area of influence of the intersection. This will
allow simultaneous left and right turns onto Ten Mile Road from the site.
The applicant's proposal to construct Gondola Drive/Malta Drive as a 31-foot wide collector
street section with a multi-use pathway on one side of the roadway and on-street bike lanes on
11 Adero Park/
MPP25-0004 / H-2024-0068
the other side does not meet District policy and should not be approved, as proposed.
Consistent with the MSM, the applicant should be required to construct Gondola Drive/Malta
Drive as a 36-foot wide residential collector street section with 2-travel lanes, on-street bike
lanes, vertical curb, gutter and 5-foot wide detached concrete sidewalk with a minimum 8-foot
wide landscape strip.
Or, if the applicant chooses to construct a 10-foot wide multi-use pathway, then it should be
required to be constructed on both sides of the roadway and the street section should be
reduced to a 26-foot wide residential collector street section, as on-street bike lanes will not be
required. The applicant should be required to transition the multi-use pathway to on-street bike
lanes per MUP-02 (Attachment 2), at the intersection of Gondola Drive/Malta Drive and San
Vito Way.
The applicant should be required to coordinate with the adjacent property owner to the south to
dedicate right-of-way necessary to allow Gondola Drive/Malta Drive to be constructed in the
proposed location. The applicant should provide written documentation of the agreement to
ACHD Development Review prior to the approval of civil plans.
5. Internal Local Streets
a. Existing Conditions: There are two local streets stubbing to the site's north property line, San
Vito Avenue and Fairborn Avenue.
There are no local public streets within the site.
b. Applicant Proposal: The applicant is proposing to extend San Vito Avenue and Fairborn
Avenue into the site.
The applicant is proposing to construct an entrance roadway, Adero Park Avenue, as a 50-foot
wide local street section with two 21-foot wide travel lanes, a 8-foot wide center landscape
median, curb, gutter, an 8-foot wide landscape strip and 5-foot wide detached concrete
sidewalk.
The applicant is proposing to construct the internal local streets as 27-foot wide street sections
with curb, gutter, and 5-foot wide attached or detached concrete sidewalk internal to the site.
For detached sidewalk, the applicant is proposing to construct a minimum 8-foot wide landscape
strip between the back of curb and the street edge of sidewalk.
The applicant is proposing to construct a cul-de-sac turnaround at the terminus of Vogelsang
Place.
c. Staff Comments/Recommendations: The applicant's proposals meets District policy and
should be approved, as proposed.
The applicant should be required to dedicate right-of-way to 2-feet behind back of sidewalk, or
for detached sidewalk, the applicant may reduce the right-of-way to 2-feet behind back of curb
and provide a permanent right-of-way easement from the right-of-way line to 2-feet behind back
of sidewalk, for all internal local streets.
The applicant should be required to plat the center landscape median on Adero Park Avenue
as right-of-way owned by ACHD. The applicant or future home-owners association should enter
into a license agreement with ACHD if landscaping is desired within the island.
Parking is restricted on one side of the 27-foot wide street sections. The applicant should be
required to install "NO PARKING" signs on one side of the streets. Coordinate a signage
program with Development Review staff. The applicant should be required to provide written
fire department approval for the reduced street sections.
12 Adero Park/
MPP25-0004 / H-2024-0068
The applicant should be required to construct the proposed cul-de-sac at the terminus of
Vogelsang Place with a minimum turning radius of 50-feet.
6. Roadway Offsets
a. Existing Conditions: There are no public streets within the site.
b. Applicant's Proposal: The applicant is proposing to construct Gondola Drive/Malta Drive, a
collector roadway, to intersect Ten Mile Road, a minor arterial roadway, located 2,460-feet north
of McMillan Road and in alignment with Malta Drive, on the east side of Ten Mile Road.
The applicant is proposing to construct Adero Park Avenue, a local roadway, to intersect
Gondola Drive/Malta Drive, a collector roadway located 688-feet north of Vicenza Way
(measured centerline-to-centerline).
c. Staff Comments/Recommendations: The applicant's proposal to construct Gondola
Drive/Malta Drive meets District policy and should be approved, as proposed.
The applicant's proposals for the internal local streets and Adero Park Avenue meet District
policy and should be approved, as proposed.
7. Driveways
7.1 Ten Mile Road
a. Existing Conditions: There is an existing 20-foot wide unpaved driveway from the site onto
Ten Mile Road, located 519-feet south of Malta Drive (measured centerline-to-centerline).
There is an existing 15-foot wide unpaved driveway from the site onto Ten Mile Road, located
575-feet south of Malta Drive (measured centerline-to-centerline).
b. Applicant's Proposal: The applicant is proposing to close the two existing driveways from the
site onto Ten Mile Road with curb, gutter, sidewalk and landscaping.
The applicant is proposing to construct one new driveway onto Ten Mile Road located 660-feet
south of Malta Drive and 1,796-feet north of McMillian Road.
c. Staff Comments/Recommendations: The applicant's proposal to close the existing driveways
meets District policy and should be approved, as proposed.
The applicant's proposal to construct a new driveway onto Ten Mile Road does not meet District
policy and the need for the driveway was not demonstrated through the traffic impact study and
should not be approved as part of this application.
7.2 Gondola Drive
a. Existing Conditions: There is an existing 32-foot wide curb return type driveway from the site
onto Gondola Drive, located 236-feet west of San Vito Way(measured centerline-to-centerline).
b. Applicant's Proposal: The applicant is not proposing to modify the existing driveway.
c. Staff Comments/Recommendations: The applicant's proposal meets District policy and
should be approved as proposed.
8. Traffic Calming
a. Applicant's Proposal: The applicant is proposing to construct Gondola Drive/Malta Drive,
Vogelsang Place and Vicenza Place greater than 750-feet in length.
b. Staff Comments/Recommendations: The applicant should be required to redesign the above
listed roadways to reduce the length of the roadways or to include the use of passive design
elements and submit a revised preliminary plat showing the redesigned roadways for review
and approval prior to plan approval and ACHD's signature on the first final plat.
13 Adero Park/
MPP25-0004 / H-2024-0068
Speed humps/bumps and valley gutters will not be accepted as traffic calming.
9. Other Access
Ten Mile Road is classified as minor arterial roadway. Gondola Drive, San Vito Way and Vicenza
Way are classified as collector roadways. Other than the access specifically approved with this
application, direct lot access is prohibited to these roadways and should be noted on the final plat.
F. Policy
1. Federal Accessibility Design Guidelines and Standards
District policy 7203.1.1 states that developers shall follow the current version of the U.S. Access
Board's Accessibility Guidelines for Pedestrian Facilities in the Public Right-of-Way(PROWAG), 36
CFR Part 1190, September 7, 2023; (Also see, https//www.access-board.gov/prowag and
https//www.access-board.gov/files/prowag/planning-and-design-for-alternatives.pdf for additional
information).
2. Minor Improvements
Minor Improvements Policy: District Policy 7203.3 states that minor improvements to existing
Highways adjacent to a proposed development may be required. These needed transportation
facilities are to correct deficiencies or replace deteriorated facilities. Included are sidewalk and/or
bike lane construction or replacement (with physical buffers if missing and needed); construction of
transitional sidewalk segments; crosswalk construction or replacement; curb and gutter
construction or replacement; repair, replacement or expansion of curb extensions; replacement of
unused driveways with curb, gutter, sidewalk, repair or addition of traffic calming or speed mitigation
features; installation or reconstruction of pedestrian ramps; pavement repairs; signs, motor vehicle,
pedestrian and bicycle traffic control devices; and other similar items. The current version of
PROWAG will determine the applicable accessibility requirements for alterations and elements
added to existing streets. ACHD staff is responsible for identifying the minor improvements that
would be proportionate to the size and complexity of the development.
3. Livable Street Performance Measures
District policy 7203.8 states that ACHD has adopted performance measures (level of stress) for
evaluating the experience of bicyclists and pedestrians. ACHD seeks to create a transportation
network that serves all ages and abilities. Bike and pedestrian facilities built through development
should achieve a bike and pedestrian level of traffic stress 1 or 2, with no new bike lane below a
minimum of 5-feet.
4. Ten Mile Road
Arterial Roadway Policy: District Policy 7205.2.1 states that the developer is responsible for
improving all street frontages adjacent to the site regardless of whether or not access is taken to all
of the adjacent streets. Improvements shall include transitional segments in accordance with the
current version of PROWAG.
Master Street Map and Typology Policy: District Policy 7205.5 states that the design of
improvements for arterials shall be in accordance with District standards, including the Master
Street Map, Livable Streets Design Guide, and the most current ACHD Livable Streets Performance
Measures Plan as adopted by the ACHD Commission. The developer or engineer should contact
the District before starting any design.
Street Section and Right-of-Way Width Policy: District Policies 7205.2.1 & 7205.5.2 state The
standard 5-lane street section shall be 59-feet (back-of-curb to back-of-curb). This width typically
accommodates two travel lanes in each direction, a continuous center left-turn lane or landscaped
median with intermittent turn lanes, and curbs and gutters. A 5-lane road shall also include a
minimum 10-foot wide multi-use path on both sides with an 8-foot wide buffer from back-of-curb.
Other bike facility treatments as defined in the ACHD Bike Master Plan may be approved at the
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discretion of the ACHD Development Review Supervisor. If an interim on-street bike lane is required
in order to connect to existing facilities, the street section shall be 75-feet to allow for a 5-foot wide
bike lane and 3-foot wide painted buffer. The standard right-of-way width for a 5-lane arterial is 100-
feet.
Right-of-Way Dedication: District Policy 7205.2 states that The District will provide compensation
for additional right-of-way dedicated beyond the existing right-of-way along arterials listed as impact
fee eligible in the adopted Capital Improvements Plan using available impact fee revenue in the
Impact Fee Service Area.
No compensation will be provided for right-of-way on an arterial that is not listed as impact fee
eligible in the Capital Improvements Plan.
The District may acquire additional right-of-way beyond the site-related needs to preserve a corridor
for future capacity improvements, as provided in Section 7300.
Pedestrian Facilities: District Policy 7205.5.7 requires a concrete sidewalk at least 5-feet wide are
required on both sides of all arterial streets. A parkway strip at least 8-feet wide between the back-
of-curb and street edge of the sidewalk is required to provide increased safety and protection of
pedestrians. Alternatively, on roadways identified for improvement in the Capital Improvement Plan,
a minimum 10-foot wide multi-use path may be required. The path shall be placed in accordance
with planned buildout in the Master Street Map with a minimum 8-foot wide planter strip as
measured to the closest edge of the path. Street trees are encouraged between the pedestrian
facility and the roadway when irrigation and maintenance will occur by the adjacent property owner
or HOA through an approved license agreement. Consult the District's planter width policy if trees
are to be placed within the parkway strip. In some instances, to match existing conditions, a
minimum 7-foot wide sidewalk may be constructed next to the back-of-curb. ACHD Development
Review staff will be responsible for determining the required facility. Vertical hardscape alternatives
to street trees may be considered in the buffer space when street trees are not practicable.
Detached sidewalks and multi-use paths are encouraged and should be parallel to the adjacent
roadway. Pedestrian facilities will only be allowed to deviate from a straight line parallel to the
roadway when authorized by Development Review staff to accommodate site specific conditions
(i.e., street trees, utilities, etc.).
Appropriate easements shall be provided if public pedestrian facilities are placed out of the right-of-
way. The easement shall encompass the entire area between the right-of-way line and 2-feet behind
the back edge of the pedestrian facility. Pedestrian facilities shall either be located wholly within the
public right-of-way or wholly within an easement.
Curb ramps or blended transitions shall be provided to connect the pedestrian access route at each
pedestrian street crossing in accordance with the current version of PROWAG. Provide detectable
warning surface in accordance with the current version of PROWAG.
Frontage Improvements Policy: District Policy 7205.2.1 states that the developer shall widen the
pavement to a minimum of 17-feet from centerline plus a 3-foot wide gravel shoulder adjacent to
the entire site. Curb, gutter and additional pavement widening may be required (See Section
7205.5.5).
ACHD Master Street Map: ACHD Policy Section 3111.1 requires the Master Street Map (MSM)
guide the right-of-way acquisition, arterial street requirements, and specific roadway features
required through development. This segment of Ten Mile Road is designated in the MSM as a
Residential Mobility Arterial with 5-lanes and on-street bike lanes, a 59-foot street section within 99-
feet of right-of-way.
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5. Gondola Drive/Malta Drive
Collector Street Policy: District policy 7206.2.1 states that the developer is responsible for
improving all collector frontages adjacent to the site or internal to the development as required
below, regardless of whether access is taken to all of the adjacent streets. Improvements shall
include transitional segments in accordance with ADA and the current version of PROWAG.
Master Street Map and Typologies Policy: District policy 7206.5 states that if the collector street
is designated with a typology on the Master Street Map, that typology shall be considered for the
required street improvements. If there is no typology listed in the Master Street Map, then standard
street sections shall serve as the default. ACHD reserves the right to require bicycle and pedestrian
facilities above those identified in the Livable Streets Design Guide and Master Street Map to
ensure the safest facility possible based on current best practice.
Street Section and Right-of-Way Policy: District policy 7206.5.2 states that the standard right-
of-way width for collector streets shall typically be 50 to 70-feet, depending on the location and
width of the sidewalk or multi-use path and the location and use of the roadway. The right-of-way
width may be reduced, with District approval, if the sidewalk or multi-use path is located within an
easement; in which case the District will require a minimum right-of-way width that extends 2-feet
behind the back-of-curb on each side.
The standard street section shall be 47-feet (back-of-curb to back-of-curb). This width typically
accommodates a single travel lane in each direction, a continuous center left-turn lane, and bike
lanes. If a multi-use path is determined to be the required treatment, the street section shall be
reduced to 37-feet. If it is determined a continuous center left-turn lane is not appropriate and a
path is installed, the street section may be reduced to 26-feet.
Residential Collector Policy: District policy 7206.5.2 states that the standard street section for a
collector in a residential area shall be 36-feet (back-of-curb to back-of-curb). The District will
consider a 33-foot or 29-foot street section with written fire department approval and taking into
consideration the needs of the adjacent land use, the projected volumes, the need for bicycle lanes,
and on-street parking.
At the discretion of Traffic Engineering staff, adjustments may be made to the street section,
including removal of the continuous center turn lanes or modification to lane widths, where no
driveways or intersections are present or to ensure adequate space for pathways and buffers.
Half Street Policy: District Policy 7206.2.2 required improvements shall consist of pavement
widening to one-half the required width, including curb, gutter and concrete sidewalk (minimum 5-
feet), plus 12-feet of additional pavement widening beyond the centerline established for the street
to provide an adequate roadway surface, with the pavement crowned at the ultimate centerline. A
3-foot wide gravel shoulder and a borrow ditch sized to accommodate the roadway storm runoff
shall be constructed on the unimproved side. Alternatively, on roadways identified as low-stress
bikeways in ACHD's Bike Master Plan, a minimum 10-foot wide multi-use path may be required in
lieu of sidewalks. ACHD Development Review staff will be responsible for determining the required
facility. The path shall be built 8-feet behind the top back of curb as measured to the closest edge
of the path. Street trees are encouraged between the pedestrian facility and the roadway when
irrigation and maintenance will occur by the adjacent property owner or HOA through an approved
license agreement. Vertical hardscape alternatives to street trees may be considered in the buffer
space when street trees are not practicable.
Pedestrian Facilities: District policy 7206.5.6 requires a concrete sidewalk at least 5-feet wide to
be constructed on both sides of all collector streets. A parkway strip at least 8-feet wide between
the back-of-curb and street edge of the sidewalk is required to provide increased safety and
protection of pedestrians. Consult the District's planter width policy if trees are to be placed within
the parkway strip. Sidewalk constructed next to the back-of-curb shall be a minimum of 7-feet wide.
Alternatively, on roadways identified as low-stress bikeways in ACHD's Bike Master Plan, a
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minimum 10-foot wide multi-use path may be required in lieu of sidewalks. ACHD Development
Review staff will be responsible for determining the required facility. The path shall be built 8-feet
behind the back-of-curb as measured to the closest edge of the path. Street trees are encouraged
between the pedestrian facility and the roadway when irrigation and maintenance will occur by the
adjacent property owner or HOA through an approved license agreement. Vertical hardscape
alternatives to street trees may be considered in the buffer space when street trees are not
practicable.
Pedestrian facilities should be parallel to the adjacent roadway. Pedestrian facilities will only be
allowed to deviate from a straight line when authorized by Development Review staff to meet site
specific conditions (i.e., street trees, utilities, etc.).
Appropriate easements shall be provided if public sidewalks or multi-use paths are placed out of
the right-of-way. The easement shall encompass the entire area between the right-of-way line and
2-feet behind the back edge of the sidewalk or multi-use path. Sidewalks shall either be located
wholly within the public right-of-way or wholly within an easement.
Curb ramps or blended transitions shall be provided to connect the pedestrian access route at each
pedestrian street crossing in accordance with the current version of PROWAG. Provide detectable
warning surface in accordance with the current version of PROWAG.
ACHD Master Street Map: ACHD Policy Section 3111.1 requires the Master Street Map (MSM)
guide the right-of-way acquisition, collector street requirements, and specific roadway features
required through development. This segment of Gondola Drive is designated in the MSM as a
Residential Collector with 2-lanes and on-street bike lanes, a 36-foot street section within 66-feet
of right-of-way.
ACHD Master Street Map: ACHD Policy Section 3111.1 requires the Master Street Map (MSM)
guide the right-of-way acquisition, collector street requirements, and specific roadway features
required through development. A new collector roadway was identified on the MSM with the street
typology of Residential Collector. The new collector roadway should align with Gondola Drive or
San Vito Way on the southwest side of the site and continue through the property to align with Malta
Drive on the east side of Ten Mile Road. The Residential Collector typology as depicted in the
Livable Street Design Guide recommends a 2-lane roadway with bike lanes, and on street parking,
a 36-foot street section within 66-feet of right-of-way.
6. Adero Park Avenue, Bolsena Way, San Vito Avenue and Fairborn
Avenue
Local Roadway Policy: District Policy 7207.2.1 states that the developer is responsible for
improving all local street frontages adjacent to the site regardless of whether or not access is taken
to all of the adjacent streets.
Street Section and Right-of-Way Policy: District Policy 7207.5 states that right-of-way widths for
all local streets shall generally not be less than 47-feet wide and that the standard street section
shall be 33-feet (back-of-curb to back-of-curb).
Standard Urban Local Street-33-foot Street Section and Right-of-way Policy: District Policy
7207.5.2 states that the standard street section shall be 33-feet (back-of-curb to back-of-curb) for
developments with any buildable lot that is less than 1 acre in size. This street section shall include
curb, gutter, and minimum 5-foot wide concrete sidewalks on both sides and shall typically be
constructed within 47-feet of right-of-way.
For the City of Kuna and City of Star: Unless otherwise approved by Kuna or Star, the standard
street section shall be 36-feet (back-of-curb to back-of-curb) for developments with any buildable
lot that is less than 1 acre in size. This street section shall include curb, gutter, and minimum 5-foot
wide concrete sidewalks on both sides and shall typically be constructed within 50-feet of right-of-
way.
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Continuation of Streets Policy: District Policy 7207.2.4 states that an existing street, or a street
in an approved preliminary plat, which ends at a boundary of a proposed development shall be
extended in that development. The extension shall include provisions for continuation of storm
drainage facilities. Benefits of connectivity include but are not limited to the following:
• Reduces vehicle miles traveled.
• Increases pedestrian and bicycle connectivity.
• Increases access for emergency services.
• Reduces need for additional access points to the arterial street system.
• Promotes the efficient delivery of services including trash, mail and deliveries.
• Promotes appropriate intra-neighborhood traffic circulation to schools, parks, neighborhood
commercial centers, transit stops, etc.
• Promotes orderly development.
Sidewalk Policy: District Policy 7207.5.7 states that five-foot wide concrete sidewalk is required
on both sides of all local street, except those in rural developments with net densities of one dwelling
unit per 1.0 acre or less, or in hillside conditions where there is no direct lot frontage, in which case
a sidewalk shall be constructed along one side of the street. Some local jurisdictions may require
wider sidewalks.
The sidewalk may be placed next to the back-of-curb. Where feasible, a parkway strip at least 8-
feet wide between the back-of-curb and the street edge of the sidewalk is recommended to provide
increased safety and protection of pedestrians and to allow for the planting of trees in accordance
with the District's Tree Planting Policy. If no trees are to be planted in the parkway strip, the
applicant may submit a request to the District, with justification, to reduce the width of the parkway
strip.
Detached sidewalks are encouraged and should be parallel to the adjacent roadway. Meandering
sidewalks are discouraged.
A permanent right-of-way easement shall be provided if public sidewalks are placed outside of the
dedicated right-of-way. The easement shall encompass the entire area between the right-of-way
line and 2-feet behind the back edge of the sidewalk. Sidewalks shall either be located wholly within
the public right-of-way or wholly within an easement.
Half Street Policy: District Policy 7207.2.2 required improvements shall consist of pavement
widening to one-half the required width, including curb, gutter and concrete sidewalk (minimum 5-
feet), plus 12-feet of additional pavement widening beyond the centerline established for the street
to provide an adequate roadway surface, with the pavement crowned at the ultimate centerline. A
3-foot wide gravel shoulder and a borrow ditch sized to accommodate the roadway storm runoff
shall be constructed on the unimproved side.
Cul-de-sac Streets Policy: District policy 7207.5.8 requires cul-de-sacs to be constructed to
provide a minimum turning radius of 50-feet; in rural areas or for temporary cul-de-sacs the
emergency service providers may require a greater radius. Landscape and parking islands may be
constructed in turnarounds if a minimum 29-foot street section is constructed around the island.
The pavement width shall be sufficient to allow the turning around of a standard AASHTO SU design
vehicle without backing. The developer shall provide written approval from the appropriate fire
department for this design element.
The District will consider alternatives to the standard cul-de-sac turnaround on a case-by-case
basis. This will be based on turning area, drainage, maintenance considerations and the written
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approval of the agency providing emergency fire service for the area where the development is
located.
Landscape Medians Policy: District policy 7207.5.16 states that landscape medians are
permissible where adequate pavement width is provided on each side of the median to
accommodate the travel lanes and where the following is provided:
• The median is platted as right-of-way owned by ACHD.
• The width of an island near an intersection is 12-feet maximum for a minimum distance of
150-feet. Beyond the 150-feet, the island may increase to a maximum width of 30-feet.
• At an intersection that is signalized or is to be signalized in the future, the median width shall
be reduced to accommodate the necessary turn lane storage and tapers.
• The Developer or Homeowners Association shall apply for a license agreement if
landscaping is to be placed within these medians.
• The license agreement shall contain the District's requirements of the developer including,
but not limited to, a"hold harmless" clause; requirements for maintenance by the developer;
liability insurance requirements; and restrictions.
• Vertical curbs are required around the perimeter of any raised median. Gutters shall slope
away from the curb to prevent ponding.
7. Internal Local Streets
Reduced Urban Local Street-27-foot Street Section and Right-of-Way Policy: District Policy
7207.5.2 states that the width of a reduced urban local street shall be 27-feet (back-of-curb to back-
of-curb) with curb, gutter, and minimum 5-foot concrete sidewalks on both sides and shall typically
be within 41-feet of right-of-way. Unless approved in writing by the land use agency, this street
section is not allowed by the City of Kuna and City of Star. In some cases, this street width may not
accommodate new utilities. A 29-foot street section within 43-feet of right-of-way may be
constructed in lieu of a 27-foot street section if the applicant demonstrates that the additional
roadway width is necessary to extend the utilities.Although some parking is allowed by the following
subsections, the District will further restrict parking on a reduced width street if curves or other
physical features cause problems, if actual emergency response experience indicates that
emergency vehicles may not be able to provide service, or if other safety concerns arise. One of
the following three sets of design conditions shall apply.
Design Condition #1: Parking is allowed on one side of a reduced width street when all of the
following criteria are met:
• The street is in a residential area.
• The developer shall provide written approval from the appropriate fire department or
emergency response unit in the jurisdiction.
• The developer shall install NO PARKING signs on one side of the street, as specified by the
District and as specified by the appropriate fire department.
• This street section shall include curb, gutter, and minimum 5-foot wide concrete sidewalks
on both sides and shall typically be constructed within 41-feet of right-of-way.
• Traffic volumes on the street shall not exceed 1,000 vehicle trips per day. There shall be no
possibility that another street may be connected to it in a manner that would allow more than
1,000 vehicle trips per day.
Design Condition #2: Parking is allowed on both sides of a reduced width street when the street
layout has the qualities of a road grid system. This provides fire trucks and other emergency
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vehicles alternate routes of access since the ability to pass another vehicle may be compromised
by placement of parked vehicles on both sides of the street. The following criteria shall be met:
• The street is in a residential area.
• The developer shall provide written approval from the appropriate fire department or
emergency response unit in the jurisdiction.
• The block length of the street shall not exceed 500-feet, measured between centerlines.
• Traffic volumes on the street are not forecast to exceed 400 vehicle trips per day.
• A minimum of two street connections shall be provided to each end of the street with the
reduced width. The two connecting streets shall each connect to the larger street system to
provide the intended alternate routes of access. A street system that has one street
connection to the larger street network on one end and a loop/circle street on the other end
with no outlet shall not be approved.
• This street section shall include curb, gutter, and minimum 5-foot wide concrete sidewalks
on both sides and shall typically be constructed within 41-feet of right-of-way.
Design Condition #3: Parking is allowed on both sides of a reduced width residential street with
passing pockets that are created when two driveways are constructed near the same property line,
where a 50-foot segment will not have on—street parking on the side of the street with the
driveways. This provides fire trucks and other vehicles areas to move to the side of the street to
allow another vehicle to pass when vehicles are parked on the street. Parking is allowed on both
sides of a reduced width street when the following criteria are met:
• The street is in a residential area.
• The developer shall provide written approval from the appropriate fire department or
emergency response unit in the jurisdiction.
• Driveway locations are predetermined with curb cuts for the driveways to be installed when
the street is constructed. The curb cuts shall be 20-feet wide. Each lot on the street will be
paired with an adjacent lot. If there are an odd number of lots, one lot at either end of the
street will not be paired. Each pair of lots shall locate its driveway 5-feet from the shared lot
line of the pair.
• This street section shall include curb, gutter, and minimum 5-foot wide concrete sidewalks
on both sides and shall typically be constructed within 41-feet of right-of-way.
• The lots cannot abut an alley.
• Traffic volumes on the street are not forecast to exceed 400 vehicle trips per day.
Sidewalk Policy: District Policy 7207.5.7 states that five-foot wide concrete sidewalk is required
on both sides of all local streets, except those in rural developments with net densities of one
dwelling unit per 1.0 acre or less, or in hillside conditions where there is no direct lot frontage, in
which case a sidewalk shall be constructed along one side of the street. Some local jurisdictions
may require wider sidewalks.
The sidewalk may be placed next to the back-of-curb. Where feasible, a parkway strip at least 8-
feet wide between the back-of-curb and the street edge of the sidewalk is recommended to provide
increased safety and protection of pedestrians and to allow for the planting of trees in accordance
with the District's Tree Planting Policy. If no trees are to be planted in the parkway strip, the
applicant may submit a request to the District, with justification, to reduce the width of the parkway
strip.
Detached sidewalks are encouraged and should be parallel to the adjacent roadway. Meandering
sidewalks are discouraged.
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A permanent right-of-way easement shall be provided if public sidewalks are placed outside of the
dedicated right-of-way. The easement shall encompass the entire area between the right-of-way
line and 2-feet behind the back edge of the sidewalk. Sidewalks shall either be located wholly
within the public right-of-way or wholly within an easement.
8. Roadway Offsets
Local Street Intersection Spacing on Principal Arterials: District policy 7205.4.3 states that
new local streets should not typically intersect arterials. Local streets should typically intersect
collectors. If it is necessary, as determined by ACHD, for a local street to intersect an arterial, the
minimum allowable offset shall be 1,320-feet as measured from all other existing roadways as
identified in Table 1 b (7205.4.7).
Local Street Intersection Spacing on Minor Arterials: District policy 7205.4.3 states that new
local streets should not typically intersect arterials. Local streets should typically intersect
collectors. If it is necessary, as determined by ACHD, for a local street to intersect an arterial, the
minimum allowable offset shall be 660-feet as measured from all other existing roadways as
identified in Table 1 a (7205.4.6).
Collector Offset Policy: District policy 7205.4.2 states that the optimum spacing for new
signalized collector roadways intersecting minor arterials is one half-mile.
District policy 7205.4.2 states that the optimum spacing for new signalized collector roadways
intersecting principal arterials is one half-mile.
District policy 7206.4.2 states that the preferred spacing for new collectors intersecting existing
collectors is '/4 mile to allow for adequate signal spacing and alignment.
District policy 7206.4.3 states that access is typically prohibited within the influence area of an
existing or future roundabout intersection, which is generally considered the area from the
intersection to the far end of the splitter islands.
District policy 7206.4.5, states that the preferred spacing for a new local street intersecting a
collector roadway to align or offset a minimum of 330-feet from any other street (measured
centerline to centerline).
Local Offset Policy: District policy 7207.4.2, requires local roadways to align or provide a minimum
offset of 125-feet from any other street (measured centerline to centerline).
District policy 7208.4.2, requires commercial roadways intersecting other local streets (residential,
industrial or commercial) to provide a minimum offset of 125-feet from any other roadway or
intersection (measured centerline to centerline).
District policy 7209.4.2, requires industrial roadways intersecting other local streets (residential,
industrial or commercial) to provide a minimum offset of 125-feet from any other roadway or
intersection (measured centerline to centerline).
9. Driveways
9.1 Ten Mile Road
Access Points Policy: District Policy 7205.4.1 states that all access points associated with
development applications shall be determined in accordance with the policies in this section and
Section 7202. Access points shall be reviewed only for a development application that is being
considered by the lead land use agency. Approved access points may be relocated and/or
restricted in the future if the land use intensifies, changes, or the property redevelops.
Access Policy: District policy 7205.4.6 states that direct access to minor arterials is typically
prohibited. If a property has frontage on more than one street, access shall be taken from the street
having the lesser functional classification. If it is necessary to take access to the higher classified
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street due to a lack of frontage, the minimum allowable spacing shall be based on Table 1 a under
District policy 7205.4.6, unless a waiver for the access point has been approved by the District
Commission.
Driveway Location Policy: District policy 7205.4.5 requires driveways located on minor arterial
roadways from a signalized intersection with a single left turn lane shall be located a minimum of
330-feet from the nearest intersection for a right-in/right-out only driveway and a minimum of 660-
feet from the intersection for a full-movement driveway.
District policy 7205.4.5 requires driveways located on minor arterial roadways from a signalized
intersection with a dual left turn lane shall be located a minimum of 330-feet from the nearest
intersection for a right-in/right-out only driveway and a minimum of 710-feet from the intersection
for a full-movement driveway.
Successive Driveways: District policy 7205.4.6 Table la, requires driveways located on minor
arterial roadways with a speed limit of 40 MPH to align or offset a minimum of 330-feet from any
existing or proposed driveway.
Driveway Width Policy: District policy 7205.4.8 restricts high-volume driveways (100 VTD or
more)to a maximum width of 36-feet and low-volume driveways (less than 100 VTD)to a maximum
width of 30-feet. Curb return type driveways with 30-foot radii will be required for high-volume
driveways with 100 VTD or more. Curb return type driveways with 15-foot radii will be required for
low-volume driveways with less than 100 VTD.
Driveway Paving Policy: Graveled driveways abutting public streets create maintenance
problems due to gravel being tracked onto the roadway. In accordance with District policy,
7205.4.8, the applicant should be required to pave the driveway its full width and at least 30-feet
into the site beyond the edge of pavement of the roadway and install pavement tapers in accordance
with Table 2 under District Policy 7205.4.8.
Cross Access Easements/Shared Access Policy: District Policy 7202.4.1 states that cross
access utilizes a single vehicular connection that serves two or more adjoining lots or parcels so
that the driver does not need to re-enter the public street system.
9.2 Gondola Drive and Malta Drive
Access Policy: District Policy 7205.4.1 states that all access points associated with development
applications shall be determined in accordance with the policies in this section and Section 7202.
Access points shall be reviewed only for a development application that is being considered by the
lead land use agency. Approved access points may be relocated and/or restricted in the future if
the land use intensifies, changes, or the property redevelops.
District Policy 7206.1 states that the primary function of a collector is to intercept traffic from the
local street system and carry that traffic to the nearest arterial. A secondary function is to service
adjacent property. Access will be limited or controlled. Collectors may also be designated at bicycle
and bus routes.
Driveway Location Policy (Signalized Intersection): District policy 7206.4.3 requires driveways
located on collector roadways near a signalized intersection to be located outside the area of
influence; OR a minimum of 440-feet from the signalized intersection for a full-access driveway and
a minimum of 220-feet from the signalized intersection for a right-in/right-out only driveway.
Dimensions shall be measured from the centerline of the intersection to the centerline of the
driveway.
Driveway Location Policy (Stop Controlled Intersection): District policy 7206.4.4 requires
driveways located on collector roadways near a STOP controlled intersection to be located outside
of the area of influence; OR a minimum of 150-feet from the intersection, whichever is greater.
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Dimensions shall be measured from the centerline of the intersection to the centerline of the
driveway.
Successive Driveways: District policy 7206.4.5 Table 1 requires driveways located on collector
roadways with a speed limit of 25 MPH and daily traffic volumes greater than 100 VTD to align or
offset a minimum of 245-feet from any existing or proposed driveway.
Driveway Width Policy: District policy 7206.4.6 restricts high-volume driveways (100 VTD or
more)to a maximum width of 36-feet and low-volume driveways (less than 100 VTD)to a maximum
width of 30-feet. Curb return type driveways with 30-foot radii will be required for high-volume
driveways with 100 VTD or more. Curb return type driveways with 15-foot radii will be required for
low-volume driveways with less than 100 VTD.
Driveway Paving Policy: Graveled driveways abutting public streets create maintenance
problems due to gravel being tracked onto the roadway. In accordance with District policy,
7206.4.6, the applicant should be required to pave the driveway its full width and at least 30-feet
into the site beyond the edge of pavement of the roadway and install pavement tapers in accordance
with Table 2 under District Policy 7206.4.6.
Minor Improvements Policy: District Policy 7203.3 states that minor improvements to existing
Highways adjacent to a proposed development may be required. These needed transportation
facilities are to correct deficiencies or replace deteriorated facilities. Included are sidewalk and/or
bike lane construction or replacement (with physical buffers if missing and needed); construction of
transitional sidewalk segments; crosswalk construction or replacement; curb and gutter
construction or replacement; repair, replacement or expansion of curb extensions; replacement of
unused driveways with curb, gutter, sidewalk, repair or addition of traffic calming or speed mitigation
features; installation or reconstruction of pedestrian ramps; pavement repairs; signs, motor vehicle,
pedestrian and bicycle traffic control devices; and other similar items. The current version of
PROWAG will determine the applicable accessibility requirements for alterations and elements
added to existing streets. ACHD staff is responsible for identifying the minor improvements that
would be proportionate to the size and complexity of the development.
9.3 Internal Commercial Street— Future Phase
Driveway Location Policy: District policy 7208.4.1 requires driveways near intersections to be
located a minimum of 75-feet (measured centerline-to-centerline) from the nearest local street
intersection, and 150-feet from the nearest collector/arterial or arterial street intersection.
Successive Driveways: District Policy 7208.4.1 states that successive driveways away from an
intersection shall have no minimum spacing requirements for access points along a local street, but
the District does encourage shared access points where appropriate.
Driveway Width Policy: District policy 7208.4.3 restricts commercial driveways to a maximum
width of 40-feet. Most commercial driveways will be constructed as curb-cut type facilities.
Driveway Paving Policy: Graveled driveways abutting public streets create maintenance
problems due to gravel being tracked onto the roadway. In accordance with District policy,
7208.4.3, the applicant should be required to pave the driveway its full width and at least 30-feet
into the site beyond the edge of pavement of the roadway.
Driveway Design Requirements: District policy 7208.4.3 states if an access point is to be gated,
the gate or keypad (whichever is closer) shall be located a minimum of 50-feet from the near edge
of the intersection and a turnaround shall be provided.
10. Traffic Calming
Speed Control and Traffic Calming Policy (Local): District policy 7207.3.7 states that the design
of local street systems should discourage excessive speeds by using passive design elements. If
the design or layout of a development is anticipated to necessitate future traffic calming
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implementation by the District, then the District will require changes to the layout and/or the addition
of passive design elements such as horizontal curves, bulb-outs, chokers, etc. The District will also
consider texture changes to the roadway surface (i.e. stamped concrete) as a passive design
element. These alternative methods may require maintenance and/or license agreement.
Speed Control and Traffic Calming Policy (Collectors): District policy 7206.3.8 states that
collector streets should be designed to discourage speeds above 35 MPH and in a residential area,
collector streets should be designed to discourage speeds above 30 MPH. The design of collector
street systems should discourage excessive speeds by using passive design elements. If the
design or layout of a development is anticipated to necessitate future traffic calming implementation
by the District, then the District will require changes to the layout and/or the addition of passive
design elements such as horizontal curves, bulb-outs, chokers, etc. The District will also consider
texture changes to the roadway surface (i.e. stamped concrete) as a passive design element.
These alternative methods may require a maintenance and/or license agreement.
11. Tree Planters
Tree Planter Policy: Tree Planter Policy: The District's Tree Planter Policy prohibits all trees in
planters less than 8-feet in width without the installation of root barriers. Class II trees may be
allowed in planters with a minimum width of 8-feet, and Class I and Class III trees may be allowed
in planters with a minimum width of 10-feet.
12. Landscaping
Landscaping Policy: A license agreement is required for all landscaping proposed within ACHD
right-of-way or easement areas. Trees shall be located no closer than 10-feet from all public storm
drain facilities. Landscaping should be designed to eliminate site obstructions in the vision triangle
at intersections. District Policy 5104.3.1 requires a 40-foot vision triangle and a 3-foot height
restriction on all landscaping located at an uncontrolled intersection and a 50-foot offset from stop
signs. Landscape plans are required with the submittal of civil plans and must meet all District
requirements prior to signature of the final plat and/or approval of the civil plans.
13. Pathway Crossings: United States Access Board R304.5.1.2 Shared Use Paths. In shared use
paths, the width of curb ramps runs and blended transitions shall be equal to the width of the shared
use path.
AASHTO's Guidelines for the Development of Bicycle Facilities 5.3.5 Other Intersection
Treatments: The opening of a shared use path at the roadway should be at least the same width
as the shared use path itself. If a curb ramp is provided, the ramp should be the full width of the
path, not including any flared sides if utilized. . . . Detectable warnings should be placed across the
full width of the ramp.
FHWA's "Designing Sidewalks and Trails for Access" (1999) reflected common ADA-related
concepts: Chapter 6, Page 16-6: The width of the ramp should be at least as wide as the average
width of the trail to improve safety for users who will be traveling at various speeds. In addition, the
overall width of the trail should be increased, so the curb ramp can be slightly offset to the side.
The increased width reduces conflict at the intersection by providing more space for users at the
bottom of the ramp.
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G. Attachment 1 — Traffic Impact Study
Traffic Impact Analysis Adero Park Subdivision
August2024 Meridian,Idaho
SUMMARY
This abbreviated traffic impact analysis evaluated the traffic impacts for the proposed Ten Mile Project based on
the proposed land use and site access as shown in the preliminary site plan. Based on the traffic data and analysis
results,the key findings are:
1. Proposed Development
0 Adero Park Subdivision contains 262 single-fauuly residential lots with an estimated 2030 build-out year
• The proposed development is estimated to generate approximately 2,448 trips per weekday with 179
trips during the AM peak hour and 246 trips during the PM peak hour
• The estimated site traffic distribution patterns are
o 25%with origins/destination west of the site
■ Approximately 15% is estimated to travel through the existing neighborhood roadway
network
o 40%with origins/destination cast of the site
o 35%with ongins/destination south ofthe site
2. 2024 Existing Traffic Conditions
■ US 20/26 and Ten Nlile Road intersection
• Based on the 2019-2023 crash data,there were 35 reported crashes at the intersection
• The intersection crash rate is 0.56 crashes per million entering vehicles(ACC/MVE)
• The intersection meets minimum operational during the weekday peak hours thresholds analyzed with
the existing intersection control and lane configuration
• The estimated 95'percentile queue lengths in the turn lanes are within the existing storage lengths
■ _Malta Drive and Ten We Road intersection
• There were 3 reported crashes at the intersection
• The intersection crash rate is 0.12 ACC/MVE
• The intersection meets minimum operational during the weekday peak hours thresholds analyzed with
the existing intersection control and lane configuration
• The intersection does not warrant a northboiuid right-turn lane
• The intersection does not meet any applicable MUTCD signal warrant
3. 2030 Build-Out Year Background Traffic Conditions
■ US 20/26 and Ten ARle Road intersection
• The proposed Fast Eddy's store/gas station is planning to improve the north leg of the Chinden
Boulevard and Ten We Road intersection for site access
a The existing traffic signal and signal timing will need modifications to mitigate the impacts
generated by the proposed Fast Eddy's storelgas station
9 Page 17 of 19
25 Adero Park/
MPP25-0004 / H-2024-0068
Traffic Impact Analysis Adera Park Subdivision
August 2024 Meridian,Idaho
• The intersection is anticipated to meet minimum operational during the weekday peak hours thresholds
analyzed with the existing intersection control and lane configuration and off-site improvements. No
innprovements are needed to mitigate 2030 background traffic operations
• The estimated 95*percentile queue lengths in two turn lanes are anticipated to extend beyond the
available storage lengths:
o The 95'h percentile queue in the northbound right-turn lane is anticipated to extend 100 feet beyond
the 450-foot striped right-turn lane during the AM peak hour. There is additional available storage
length beyond the northbound right-turn lane
o The 95"percentile queue in the eastbound right-turn lane is anticipated to extend 100 feet beyond
the 3 50-foot striped right-turn lane during the PM peak hour. The eastbound right-turn lane cannot
be extended as there is an existing driveway to the west
■ _Nialta Drive and Ten NEile Road intersection
• The intersection is anticipated to meet minimum operational during the weekday peak hours thresholds
analyzed with the existing intersection control and lane configuration. No improvements are needed to
mitigate 2030 background traffic operations
• The intersection does not warrant a northbound right-turn lane
• The intersection does not meet any applicable MLJTCD signal warrant
4. 2030 Build-Out Year Total Traffic Conditions
■ US 20126 and Ten Azle Road intersection
• The intersection is anticipated to meet minimum operational during the weekday peak hours thresholds
analyzed with the existing intersection control and lane configuration and off-site improvements. No
improvements are needed to mitigate 2030 total traffic operations
• The estimated 95*percentile queue lengths in two turn lanes are anticipated to extend beyond the
available storage lengths:
a The 95'h percentile queue in the northbound right-turn lane is anticipated to extend 175 feet beyond
the 450-foot striped right-turn lane during the AM peak hour. There is additional available storage
length beyond the northbound right-turn lane
a The 95''percentile queue in the eastbound right-turn lane is anticipated to extend 100 feet beyond
the 350-foot striped right-turn lane during the PM peak hour. The eastbound right-turn lane cannot
be extended as there is an existing driveway to the west
■ _Alalta Drive and Ten 1blile Road intersection
• The intersection is anticipated to meet minimum operational diu7ng the weekday peak hours thresholds
analyzed with the existing intersection control and lane configuration
• The intersection is anticipated to warrant a sorthbound right-turn lane
Page 18 of 19
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Traffic Impact Analysis Adero Park Subdivision
August 2024 Meridian,Idaho
o Warranted by 2029 when approximately 220 lots are constructed and occupied generating 153 AM
peak trips and 209 PM peak trips
• The intersection does not meet any applicable MUTCD signal warrant
N Estimated site traffic on stub streets
• Approximately 120 hips per day on San Vito Avenue and Fairborn Avenue,which are local streets
• Approximately 120 trips per day on Gondola Drive,a 2-lane collector street
• Approximately 60 hips per day on San Vito Way,a 2-lane collector street
• Approximately 720 trips per day on Vicenza Way,a 3-lane collector street
• Approximately 370 hips per day on MI-m Drive,a local street
• Based on COMPASS forecasts,the projected 2030 total peak hour traffic on tbie existing neighborhood
collector streets are within ACHD planning thresholds for 2-lane and 3-lane collector streets
• The projected 2030 total directional peak hour volume on the proposed Malta Drive is 141 vehicles per
hour(vph),which is within the 425 vph planning threshold for a 2-lane collector street
Page 19 of 19
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H. Attachment 2 — MUP-02
Multi4jse Path Transition Multi-11.1%P Path Transition
To On—Street Bike Lane To Raised Bike Lane
Eluffereue
er
Curb
Width ot 5 2' 0 Ork. L.-
Attnched 4 Bike Lone
Sidewalk R3-17 r Gmen Ni-rt on
Parallel Rdi,,I: 7�Ri
rTroneltion To Sidewalk Optional DW)
Detail A Green Ptifint T. �ik- Lur-
Width From Top Of
On Tr.n5rf.- L-1 Ld
Romp Transition To
Tranartlon T, nql 11TYP) slop, 131de-oll, Width
From Top Ot
r i
Frc- Tl Rejnp
ffd�
r
IM Mn
ffid-
Je N K_ IN!Pa
Z_R9-7
(M DD)
AJ e �j RU-j, .2
4'Yellow Far 25'
4'Y�11- F_ 25, in
,MOD) 2 C:
4'Yellow Far 25' 3'-9' Y.11.. Skip N-13' Yellow Skip
_J
Y-9, Yellow Skip 11"Y.lk- Far 25' f y y w
Detail A S-9, "11- !:kip J Detail B E
On-Street -pppouoh/Uupdr ure Romps Raised Apipr-onzh/!_�epor-zure Ramps x
Ld
14 4 4
3 10% Max Wing Slope
{Reference 1}
-1-12.5% Lqa� Bilm Rump CY I f M'N r du)
_Of Mur Slope {Reference 4}
Notes (Kjin.;
'LI L i i Marking Per ACHO Standard Drawing TS-11 13.04. Marking Shall Be
ed Immediately Before And After A Bike Transition Ramp (Reference 10).
Buffer Material May Be Traversable until Bike Ramp Deflection- Buffer Trecitmentr/Materia1r, To Be Determined On A Case-By-Case Basis
During Project Design-
Introduce Cieurnelzric Deflection Vic Detectable Edge/Buffer For I'Dait'irve Guidance Along Pudasl;rian Desirable Pcith. 2' Minimum Deflection
Length On Roadway Side Of Bike Ramp- Detectable Edge/Buffer Treatments Including TWSIs, Curbs, Aggregates. Or Other Detectable
Treatments For Nflaction To Be Determined On A Case-By-Case Basis During project Design.
Match Receiving Bike Facility width. S' Minimum- 'k -4,11111%
5 Width To klatch Sidewalk Width At Top Of Bike Curb Ramp.
30' Minimum Before Any Bike Lane Crossing Conflicts (I.E. On-Street Parking, Turn Lon". Etc.)
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I. Standard Conditions of Approval
1. All proposed irrigation facilities shall be located outside of the ACHD right-of-way (including all
easements). Any existing irrigation facilities shall be relocated outside of the ACHD right-of-way
(including all easements).
2. Private Utilities including sewer or water systems are prohibited from being located within the ACHD
right-of-way.
3. In accordance with District policy, 7203.3, the applicant may be required to update any existing non-
compliant pedestrian improvements abutting the site to meet current Americans with Disabilities
Act (ADA), Public Right-of-Way Accessibility Guidelines (PROWAG), ISPWC, or ACHD
requirements . The applicant's engineer should provide documentation of compliance to District
Development Review staff for review.
4. Replace any existing damaged curb, gutter and sidewalk and any that may be damaged during the
construction of the proposed development. Contact Construction Services at 387-6280 (with file
number)for details.
5. A license agreement and compliance with the District's Tree Planter policy is required for all
landscaping proposed within ACHD right-of-way or easement areas.
6. All utility relocation costs associated with improving street frontages abutting the site shall be borne
by the developer.
7. It is the responsibility of the applicant to verify all existing utilities within the right-of-way. The
applicant at no cost to ACHD shall repair existing utilities damaged by the applicant. The applicant
shall be required to call DIGLINE (1-811-342-1585) at least two full business days prior to breaking
ground within ACHD right-of-way. The applicant shall contact ACHD Traffic Operations 387-6190
in the event any ACHD conduits (spare or filled)are compromised during any phase of construction.
8. Utility street cuts in pavement less than five years old are not allowed unless approved in writing by
the District. Contact the District's Utility Coordinator at 387-6258 (with file numbers) for details.
9. All design and construction shall be in accordance with the ACHD Policy Manual, ISPWC Standards
and approved supplements, Construction Services procedures and all applicable ACHD Standards
unless specifically waived herein. An engineer registered in the State of Idaho shall prepare and
certify all improvement plans.
10. Construction, use and property development shall be in conformance with all applicable
requirements of ACHD prior to District approval for occupancy.
11. No change in the terms and conditions of this approval shall be valid unless they are in writing and
signed by the applicant or the applicant's authorized representative and an authorized
representative of ACHD. The burden shall be upon the applicant to obtain written confirmation of
any change from ACHD.
12. If the site plan or use should change in the future, ACHD Planning Review will review the site plan
and may require additional improvements to the transportation system at that time. Any change in
the planned use of the property, which is the subject of this application, shall require the applicant
to comply with ACHD Policy and Standard Conditions of Approval in place at that time unless a
waiver/variance of the requirements or other legal relief is granted by the ACHD Commission.
J. Conclusions of Law
1. The proposed site plan is approved, if all of the Site Specific and Standard Conditions of Approval
are satisfied.
2. ACHD requirements are intended to assure that the proposed use/development will not place an
undue burden on the existing vehicular transportation system within the vicinity impacted by the
proposed development.
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Request for Appeal of Staff Decision
To request an appeal of a staff level decision, see District policy 7101.6.7 at
https://www.achdidaho.org/home/showpublisheddocument/452/638243231708370000
Request for Reconsideration of Commission Action
To request reconsideration of a Commission Action, see District policy 1006.11 at
https://www.achdidaho.org/home/showpublisheddocument/452/638243231708370000
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