2019-07-18 William McEwenMillbrae Subdivision Planning meeting
After reviewing the ACHD Service Level Study and speaking with Ryan Head, the Head Planner
at ACRD, several items need to be altered or removed to make this report accurate. A
summary of factual findings are as follows:
1. The Black Cat / Cherry intersection will be over maximum capacity when the Burlingame
and Millbrae subdivisions are completed and sold. This does not include the land for
auction on Cherry Lane or the fact that road counts were done prior to the completion
of St. Lukes Hospital. These adjusted counts were calculated using ACHD standards and
data.
2. The road and intersection improvements mentioned in this report have been deferred
for at least 10 years.
Unless improvements are made to Black Cat Road North and South of the Subdivision entrance
including a center -lane, and at the North and South intersection point at Cherry Ln, the
surrounding community will be materially, adversely affected. There will be an appeal of the
ACHD Service Level Study as it is written
There is a remedy that would benefit the Developer, the future home owners, and the
surrounding community. ACHD is willing to entertain doing a Developer Cooperative, which
will allow the necessary road improvements to be done and paid for out of future assessments
that the Developers in the area will be paying at the time of development.
The second issue with the Millbrae Subdivision proposal is the timing of the zoning change
request. The Meridian Comprehensive Plan meeting is August 8, a very short time from now.
It makes sense to wait for what develops form the Comprehensive Plan meeting.
I encourage this committee to spend the time to explore our options regarding doing a
Developer Cooperative to get the road improvements completed at the time of the project.
ACHD Service Level Study
Findings of Fact
4. Burlingame Subdivision, a residential subdivision consisting of 74 buildable lots is located west of this site and was
approved by ACHD in September of 2018.
Traffic Findings for Consideration
1. Trip Generation: This development is estimated to generate 387 additional vehicle trips per day;41 additional vehicle
trips per hour in the PM peak hour, based on the Institute of Transportation Engineers Trip Generation Manual, 10th
edition. 24
2. Condition of Area Roadways
Traffic Count is based on Vehicles per hour (VPH)
(Definitions "E" = Level of Service (i.e. Maximum Capacity) at 100%)
Acceptable level of service for a five - lane principal arterial is " E" ( 1, 780 VPH). (2)
Acceptable level of service for a two- lane minor arterial is " E" ( 575 VPH). (2)
(This is based on Current Traffic and not the addition of Subdivisions. See traffic Counts(3)
STREETS
LOCATION
CITY DATE
24 HR
COUNT
PM Peak
Existing
PM
PEAK
698
Functional
PM Peak Hour
Roadway
Frontage
CHERRY LN
RD
Hour Level
Plus
EB
480
Classification
Traffic Count
Approach & Total
WB
147
608
of Service
Project
Better
LN
615-
Principal
NB
Better than
465
Cherry Ln
Approach & Total
608
SB
than
280
feet
Arterial
"Ell
"Ell
Better
488-
Minor
Better than
Black Cat
465
than
feet
Arterial
„E„
"Ell
(Definitions "E" = Level of Service (i.e. Maximum Capacity) at 100%)
Acceptable level of service for a five - lane principal arterial is " E" ( 1, 780 VPH). (2)
Acceptable level of service for a two- lane minor arterial is " E" ( 575 VPH). (2)
(This is based on Current Traffic and not the addition of Subdivisions. See traffic Counts(3)
STREETS
LOCATION
CITY DATE
24 HR
COUNT
DIRECTION
AM
PEAK
PM
PEAK
698
EAST OF BLACK CAT
387
CHERRY LN
RD
Meridian 8/8/2018
8851
EB
480
313
Approach & Total
WB
147
608
BLACK CAT
NORTH OF CHERRY
RD
LN
Meridian 2/7/2018
7047
NB
195
465
Approach & Total
SB
399
280
Additions Traffic from future and proposed subdivisions (3)
Additional
Additional
Subdivision Homes PM peak
24 HR
hour
COUNT
Burlingame 74 74
698
Millbrae 41 41
387
Total Peak of 115.
Recalculated Traffic Count is based on Vehicles per hour (VPH) Including New and Proposed Subdivisions as designated
by ACHD report. (2)
Acceptable level of service for a five - lane principal arterial is " E" ( 1, 780 VPH). (2)
Acceptable level of service for a two- lane minor arterial is " E" ( 575 VPH). (2)
8. Capital Improvements Plan (CIP)/ Integrated Five Year Work Plan (IFYWP): (2)
Black Cat Road is listed in the CIP to be widened to 5 -lanes from Ustick Road to Franklin Road between 2021 and
2025.
The intersection of Black Cat Road and Cherry Lane is listed in the CIP to be widened to 5 - lanes on the north
leg, 6 -lanes on the south, 5 -lanes east, and 4 -lanes on the west leg, and signalized between 2021 and 2025.
The 2019-2023 Integrated Five -Year Work Program (IFYWP) on the ACHD site does not mention any work for the
intersection of Black Cat & Cherry. Nor does the Intersection Projects or improvements from Ustick Road to Franklin
Road on Black Cat. (1) In speaking with Ryan Head, the Head Planner at ACHD, these project will not be done for at least
10 years.
The Over Max Intersection issue would most likely be resolved by:
Extending the Left Turn Lane on S Black Cat Intersection to 500 ft.
Create a Center Lane on N Black Cat extending North 500 ft from Subdivision entrance with the South end of the
center lane used as a Left Turn Lane.
Reference
1. https://www.achdidaho.ore/Documents/IFYWP/2019 2023/Intersection 19231FYWP.Ddf
https://achd.maps.arcgis.com/apps/MapSeries/index.html?appid=7c8aa5d33c554f5181340d5be044c20b
2. ACHD Millbrae Subdivision/ MPP19- 0017/ H- 2019-006 Report
3. Traffic Counts
https://www.achdidaho.org/Departments/Engineering/Traffic/trafficCounts.aDx
PM Peak Existing
Functional
PM Peak Hour
Roadway Frontage
Hour Level Plus
Classification
Traffic Count
of Service Project
615-
Principal
Better than
CherryLn
735
feet
Arterial
"E"
488-
Minor
Over "E"
Black Cat
580
feet
Arterial
(Max)
Acceptable level of service for a five - lane principal arterial is " E" ( 1, 780 VPH). (2)
Acceptable level of service for a two- lane minor arterial is " E" ( 575 VPH). (2)
8. Capital Improvements Plan (CIP)/ Integrated Five Year Work Plan (IFYWP): (2)
Black Cat Road is listed in the CIP to be widened to 5 -lanes from Ustick Road to Franklin Road between 2021 and
2025.
The intersection of Black Cat Road and Cherry Lane is listed in the CIP to be widened to 5 - lanes on the north
leg, 6 -lanes on the south, 5 -lanes east, and 4 -lanes on the west leg, and signalized between 2021 and 2025.
The 2019-2023 Integrated Five -Year Work Program (IFYWP) on the ACHD site does not mention any work for the
intersection of Black Cat & Cherry. Nor does the Intersection Projects or improvements from Ustick Road to Franklin
Road on Black Cat. (1) In speaking with Ryan Head, the Head Planner at ACHD, these project will not be done for at least
10 years.
The Over Max Intersection issue would most likely be resolved by:
Extending the Left Turn Lane on S Black Cat Intersection to 500 ft.
Create a Center Lane on N Black Cat extending North 500 ft from Subdivision entrance with the South end of the
center lane used as a Left Turn Lane.
Reference
1. https://www.achdidaho.ore/Documents/IFYWP/2019 2023/Intersection 19231FYWP.Ddf
https://achd.maps.arcgis.com/apps/MapSeries/index.html?appid=7c8aa5d33c554f5181340d5be044c20b
2. ACHD Millbrae Subdivision/ MPP19- 0017/ H- 2019-006 Report
3. Traffic Counts
https://www.achdidaho.org/Departments/Engineering/Traffic/trafficCounts.aDx