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IDAHO TRANSPORTATION DEPARTMENT
P.O. Box 8028
Boise, 10 83707-2028
(208) 334-8300
itd.idaho.gov
March 26, 2007
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City of Meridian
Attn: Pete Friedman
33 East Idaho Avenue
Meridian, 10 83642
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Fax: (208) 888-6854
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Re: Location: south of UP railline~- easfofMcCfermo'tt, weste! Linder. --u mile soulh ofOverlaria-- ----
State Highway: 1-84
Name: Ten Mile Interchange Specific Area Plan
Hearing Date April 5, 2007
File No. CPA 07-008
Dear Mr. Friedman:
We received your notice of amendment to the City of Meridian Comprehensive Plan by adding the Ten Mile
Interchange Specific Area Plan. Although not a part of the material attached to the transmittal letter, the
consultant, HDR, provided a traffic volume map. This map was the COMPASS "SPECIAL Ten Mile
Specific Area Plan - 2030 Build: 2030 Network with 2030 Community Choices Demographics". This map
was built from the assumptions of no passenger rail service and eight lanes on Interstate 84.
In conversations with ACHD regarding their yet to be released South Meridian Transportation Plan, the
Community Choices (CIM) build-out population for that area south of Interstate 84 was 30,000. The trend
build-out population was 70,000 and the current city plan was 100,000. The required number of lanes
approaching the interchange from the south would vary given the population disparities listed above. The
current design characteristics of the Ten Mile interchange are based upon CIM numbers; any large
divergence would require ITD to initiate new traffic studies which could delay the projected start date of
construction.
We would also recommend that ACHD identify roads parallel to Interstate 84 that would be access limited
to divert some of the expected traffic from the interstate. The CIM numbers estimate a peak traffic volume
on Interstate 84 of 1,600 vehicles per hour, which is a "C" level of service (LOS). The LOS would decrease
with any larger build-out population in the South Meridian area. The recommended parallel access limited
roads would remediate some of that increased traffic.
If you have any questions please give me a call at 334-8901.
Sincerely,
cA~~
Phil Choate
Senior Planner