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US-95: Thorn Creek Road to Moscow

Expanding the highway to four lanes on a new alignment will not only add capacity and reduce travel times but also significantly improve safety.

Once land acquisition is complete, ITD will solicit bids for construction with the goal of starting work in fall 2021.

Envision the new route

The new alignment will tie in at Reisenauer Hill, where the current four-lane section ends, and reconnect near the grain bins on the south end of Moscow.

Compared to the existing route, after construction US-95 will ascend at a more gentle grade up Reisenauer Hill to the prairie below Paradise Ridge. The highway will cut through small hills below the ridge to maintain a consistent grade, cross over Eid Road via a bridge and descend into Moscow.

Generally, US-95 will be shifted to the east less than three-quarters of a mile, and ITD is in the process of relinquishing its jurisdiction of what will be old US-95 to North Latah Highway District.

With a flatter grade and fewer approaches, the new route will provide safer travel between Moscow and Lewiston.

Map of new route (E-2)

Design details

About 6.5 miles of highway will be expanded to four lanes divided by a 34-foot median in the rural section. Shoulders will be widened, curves will be made easier to navigate and the grade will be less steep. New ditches will keep precipitation from gathering on the roadway, and a 30-foot clear zone will provide a safe area if a vehicle goes off the road.

County road intersections will have right and left turn lanes, and some current access points will be combined to limit the number of new intersections and driveways.

In the urban section just south of Moscow, a center turn lane, curbs, gutters and sidewalks will be added.


Details, such as the timing of work, will become available once ITD bids the project for construction. A bid will be solicited once the right of way process is complete with the goal of starting work in fall of 2021.

Construction is expected to take two years, with most work in the first year to take place off alignment without impacts to traffic.

ITD begins EA with FHWA to expand US-95 from top of Lewiston Hill to Moscow
Alternative for corridor selected
Project litigated by PRDC, and ITD starts EIS for Thorncreek to Moscow
ITD holds public meetings to identify issues
Workshops allow public to consider multiple alternatives
11 alternatives reduced to three (and a no-build option) after an open house
Southern portion completed in October; ITD prepares draft EIS for Thorncreek
Draft EIS approved by ITD and FHWA
Hearing for draft EIS held with extended comment period; responses to comments sent
December 2014
Final EIS and selected design published and sent for internal and legal review
March 2016
FHWA issued ROD, giving ITD authority to begin final design and purchase land
April 2017
PRDC files lawsuit
August 2017
U.S. District Court rules in favor of ITD and FHWA
January 2018
PRDC appeals
December 2018
The Ninth Circuit of Appeals rules in favor of ITD and FHWA
February 2021

Revised permit application

As of February 2021, ITD has submitted a revised 404 permit application to the U.S. Army Corps of Engineers.  Once the permit is issued, ITD will finish right-of-way acquisition, and the project can be put out for construction bids, possibly for construction in late 2021.As of Ma

April 2020

Revising wetland report

ITD gathered information to update its wetland report in order to submit a revised 404 permit application with the U.S. Army Corps of Engineers. Following that application, ITD will finish right-of-way acquisition. After those two steps are completed, the project can be put out for bids, possibly for construction in 2021.

December 2018

Expansion gets green light

The Ninth Circuit of Appeals ruled in favor of ITD in the latest appeal. Work will continue on final design plans and acquisition of right of way.


On March 9 2021, the U.S. Army Corps of Engineers granted ITD a wetlands mitigation permit. Now ITD will finish right-of-way acquisition so the project can be put out for construction bids, possibly for construction in late 2021. Read more.

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US-95 Thorncreek to Moscow: contact us

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