skip to main content
Idaho Official Government Website Contact Us

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 a permit is obtained from the Army Corps of Engineers, ITD will solicit bids for construction.

Construction pending the permit
New alignment
Look for the E-2 route
Project wins appeal
Dec. 2018 news story
Contact us

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 and ITD has a permit from ACOE.

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
Asset 5
Alternative for corridor selected
Asset 5
Project litigated by PRDC, and ITD starts EIS for Thorncreek to Moscow
Asset 5
ITD holds public meetings to identify issues
Asset 5
Workshops allow public to consider multiple alternatives
Asset 5
11 alternatives reduced to three (and a no-build option) after an open house
Asset 5
Southern portion completed in October; ITD prepares draft EIS for Thorncreek
Asset 5
Draft EIS approved by ITD and FHWA
Asset 5
Hearing for draft EIS held with extended comment period; responses to comments sent
Asset 5
December 2014
Final EIS and selected design published and sent for internal and legal review
Asset 5
March 2016
FHWA issued ROD, giving ITD authority to begin final design and purchase land
Asset 5
April 2017
PRDC files lawsuit
Asset 5
August 2017
U.S. District Court rules in favor of ITD and FHWA
Asset 5
January 2018
PRDC appeals
Asset 5
December 2018
The Ninth Circuit of Appeals rules in favor of ITD and FHWA
Asset 5

Downloads & Resources

Asset 5
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.


As of April 2020, ITD is gathering 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 construction bids, possibly for construction in 2021.

© Copyright 2020 Idaho Transportation Department Visit ITD Website

US-95 Thorncreek to Moscow: contact us

Default Project Comment Form
Maximum upload size: 8MB
Maximum upload size: 52.43MB

Signup Form