Projects |

US-93 Salmon River Bridge

The Idaho Transportation Department is beginning to make plans to replace the US-93 bridge over the Salmon River through the picturesque town of Salmon.
- Project Regions
  East Idaho
- Project Routes
  US-93
- Project Phase
  Planning & Design
US-20 Idaho Falls to Rigby

US-20 from Idaho Falls to Rigby is now being resurfaced to ensure the longevity of this vital roadway.
- Project Regions
  East Idaho
- Project Routes
  US-20
- Project Phase
  In Construction
Jefferson County Traffic Study

Traffic data is being collected and ideas being formulated to serve immediate and long-term transportation solutions in the greater Rigby area.
- Project Regions
  East Idaho
- Project Routes
  State Highway 48 US-20
- Project Phase
  Planning & Design
US-20 Osborne & SH-32 Bitch Creek Bridges

Design work is underway on the US-20 Osborne Bridge and SH-32 Bitch Creek Bridge to improve safety and ensure mobility on these vital routes.
- Project Regions
  East Idaho
- Project Routes
  State Highway 32 US-20
- Project Phase
  Planning & Design
US-93 Burnett Ditch and Kriley Gulch Bridges

Design work is underway on the Burnett Ditch Bridge near Mackay and Kriley Gulch Bridge near Salmon to improve safety and meet current standards.
- Project Regions
  East Idaho
- Project Routes
  US-93
- Project Phase
  Planning & Design
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 as early as late 2026- 2027.
- 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 Environmental Assessment

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 its service life and plans for improvement are underway.
- Project Regions
  East Idaho
- Project Routes
  US-93
- Project Phase
  Planning & Design