Projects |

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
US-20/US-26 Chinden Drainage and Design Study

In partnership with Garden City, ITD is conducting a drainage and design study along Chinden Boulevard (U.S. Highway 20/26).
- Project Regions
  Southwest Idaho
- Project Routes
  US-20 US-26
- Project Phase
  Planning & Design
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
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-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
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-20 Ashton to SH-87 Junction PEL Study

A Planning and Environmental Linkages study is nearing completion that will greatly aid the NEPA process that must come first before large-scale improvements can be made to US-20 from Ashton to SH-87.
- Project Regions
  East Idaho
- Project Routes
  US-20
- Project Phase
  Planning & Design
US-20/US-26 Chinden West

In response to increasing traffic and projected growth, ITD has developed a comprehensive plan that will improve safety, reduce congestion, and increase capacity.
- Project Regions
  Southwest Idaho
- Project Routes
  US-20 US-26
- Project Phase
  Planning & Design