2019-01-11 ITD AcceptancelSlAflp
* Your Safety • Your Mobility
Your Economic Opportunity
December 21, 2018
Sonya Allen
City of Meridian
33 E. Broadway Ave.
Meridian, Idaho 83642
VIA EMAIL
IDAHO TRANSPORTATION DEPARTMENT
P.O. Box 8028 • Boise, ID 83707-2028
(208) 334-8300 • itd.idaho.gov
RE: Stapleton Subdivision — ITD Traffic Impact Study Acceptance Letter (REVISED)
Dear Ms. Allen,
The Idaho Transportation Department (ITD) has reviewed the findings presented in the revised Stapleton
Subdivision Traffic Impact Study (TIS) dated December 17, 2018. The development is located southwest corner
of SH -69 and Harris Street. The development is requesting a full movement approach approximately 1,340ft
south of Harris Street.
Due to the increase in trips generated by the development, the following mitigation improvements need to be
installed on SH -69 prior to the development's occupancy.
phaco 1
Approximately 53 single family homes with direct access to SH -69
Proposed Approach Located Approximately 1,340ft south of Harris Street
• The approach will be limited to right -in, right -out, left -in.
• The center median will need to be designed to ITD's standards and accommodate right -in, right -
out, left -in movements for the approach to the east of SH -69 serving a storage unit business.
• Install a southbound right turn lane designed to ITD's standards.
• The development will need to dedicate 12ft of right-of-way to ITD for the length of the right turn
lane.
Existing Approach Located Approximately 670ft south of Harris Street
• The existing approach will need to be removed.
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lSlAflp
* Your Safety • Your Mobility IDAHO TRANSPORTATION DEPARTMENT
P.O. Box 8028 • Boise, ID 83707-2028
Your Economic Opportunity (208) 334-8300 • itd.idaho.gov
4T)ON
Existing Approach Located Approximately 1,100ft south of Harris Street
• The existing approach will need to be removed.
Phase 2
Initiated by either a roadway connection from Phase 1 to Harris Street or occupancy of any single family home
with access to Harris Street
SH -69 and Harris Street (Southbound Right Turn Lane)
• Extend the southbound right turn lane to meet current ITD design standards for 55MPH speed
zone.
• This improvement is required regardless of whether a traffic signal is to be installed at the same
time.
Developer is required to submit a traffic signal warrant analysis to ITD prior to initiating Phase 2, as described
above. If signal is not warranted, developer is required to resubmit a traffic signal warrant to ITD annually until
warrants are met. ACHD is working on a Road Trust fund with all developers in the area to fund the signal at SH -
69 and Harris Street when warranted.
SH -69 and Harris Street (Traffic Signal)
• Install a traffic signal that meets ACHD's signal design standards and be connected via fiber to
the Traffic Management Center's network.
o Signal poles to be set to accommodate a future northbound right turn lane at Rumple Lane.
o Signal to include ADA compliant ramps on all four corners of the intersection.
• This improvement is required when warranted.
ITD is in the process of developing a SH -69 corridor plan to determine ultimate future width and intersection
improvements along SH -69. The signal at the intersection of SH -69 and Harris Street will be permitted as
temporary and subject to change based on the completion of the SH -69 corridor plan.
The Traffic Impact Study needs to be revised to include trips generated by the storage unit develop to the east
of the proposed access on SH -69.
The Stapleton Subdivision site plan shows a connection from Solaris Street to the parcel to the south. No
current or future trips from that parcel were included in this TIS. ITD respectfully requests that the connection
be blocked until analysis has been provided including anticipated trips and impacts to SH -69.
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lSlAflp
* Your Safety • Your Mobility
Your Economic Opportunity
IDAHO TRANSPORTATION DEPARTMENT
P.O. Box 8028 • Boise, ID 83707-2028
(208) 334-8300 • itd.idaho.gov
It is the developer's responsibility to mitigate their impacts to the state highway system including acquiring
additional right-of-way to construct the necessary safety improvements. Any acquired right-of-way for safety
improvements will need to be dedicated to ITD as part of the permit.
Once ITD receives a revised TIS and if the developer is accepting of the above described safety improvements,
ITD finds the Stapleton Subdivision TIS to be acceptable. The developer will need to submit an encroachment
application (ITD form 2109) along with a $100 application fee, engineered drawings and a traffic control plan.
The existing permit for the proposed approach (ITD 3-12-238C) is for a commercial approach.
This letter only acknowledges ITD's acceptance of the TIS with the above revisions. Final approval of the
approach and improvements is determined once all documentation including a permit application has been
provided and the permit is signed.
Maintaining safety and mobility for Idaho's motorists is of the utmost importance to ITD. If you have any
questions please do not hesitate to contact me at erika.bowen@itd.idaho.gov or 208-265-4312 extension #7.
Sincerely,
(f", -L -e &,,,,
Erika R. Bowen, P.E.
ITD — District 3
Traffic Technical Engineer
cc.
Mindy Wallace — ACHD
Laren Bailey— Devco LLC
Dan Thompson —Thompson Engineers
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