Projects 3 |

Clearwater Crossings

ITD is designing upgrades for two bridges across the Clearwater River: Spalding and Arrow Bridges to improve traffic flow and enhance safety.
- Project Regions
  North-Central Idaho
- Project Routes
  US-12 US-95
- Project Phase
  Planning & Design
US-95 Freeze Road to Beplate Passing Lane

A new passing lane north of Potlatch will provide safer opportunities for passing for southbound drivers.
- Project Regions
  North-Central Idaho
- Project Routes
  US-95
- Project Phase
  Planning & Design
COMPLETE: US-95 Thorn Creek to Moscow

This expansion to four lanes on a new alignment is now complete, adding capacity and reducing travel times while significantly improving safety.
- Project Regions
  North-Central Idaho
- Project Routes
  US-95
- Project Phase
  Complete
I-15 US-20 Connector

An Environmental Impact Statement is now being completed that will allow ITD and cooperating agencies to greatly improve safety and mobility for I-15 traffic accessing US-20 in the Idaho Falls area.
- Project Regions
  East Idaho
- Project Routes
  Interstate 15 US-20
- Project Phase
  Planning & Design
US-26 Intersection Improvements at 45th & 55th

Plans to install traffic signal bridges at the intersections of 45th and 55th East and US-26 north of Idaho Falls will improve safety for travelers.
- Project Regions
  East Idaho
- Project Routes
  US-26
- Project Phase
  Planning & Design
US-20 Idaho Falls to Arco

Improvements are being planned for US-20 west of Idaho Falls to Arco. This important route leads to the Idaho National Laboratory, where more than 6,000 Idahoans are employed.
- Project Regions
  East Idaho
- Project Routes
  US-20
- Project Phase
  Planning & Design
US-26 & Hitt Road (25th East) Intersection

Improvements are in the works for the busy intersection of US-26 and Hitt Road in Idaho Falls. The road will be expanded up to five lanes by as early as 2026.
- Project Regions
  East Idaho
- Project Routes
  US-26
- Project Phase
  Planning & Design
COMPLETE: US-20 South St. Anthony Interchange

Construction is now complete on Exit 343, a new full interchange on US-20 south of St. Anthony.
- Project Regions
  East Idaho
- Project Routes
  US-20
- Project Phase
  Complete
US-20 Chester to Ashton

The Idaho Transportation Department is conducting an Environmental Assessment to be able to improve US-20 to a four-lane highway from Chester to Ashton.
- Project Regions
  East Idaho
- Project Routes
  US-20
- Project Phase
  Planning & Design
US-93 Pahsimeroi River Bridge Replacement

The Pahsimeroi River Bridge on US-93 between Challis and Salmon is reaching the end of it's service life and plans for improvement are underway.
- Project Regions
  East Idaho
- Project Routes
  US-93
- Project Phase
  Planning & Design
COMPLETE: SH-3 Soldier Creek Bridge

ITD will replace the nearly 100-year-old Soldier Creek Bridge on SH-3 to improve safety and reliability with a wider structure, higher load capacity, new guardrail, and 5-foot shoulders.
- Project Regions
  North Idaho
- Project Routes
  State Highway 3
- Project Phase
  Complete
SH-52 Snake River Bridge Replacement

The bridge has reached the end of its service life and will be replaced.
- Project Regions
  Southwest Idaho
- Project Routes
  State Highway 52
- Project Phase
  Planning & Design