Projects |

Featured
SH-16 Construction

SH-16 will improve regional mobility, provide access to I-84 in the rapidly growing central Treasure Valley, and improve commutes for thousands of motorists.
- Project Regions
  Southwest Idaho
- Project Routes
  Interstate 84 State Highway 16
- Project Phase
  In Construction
Featured
SH-21 Lowman Bridge

The old bridge over the South Fork of the Payette River is at the end of its life cycle and is being rebuilt.
- Project Regions
  Southwest Idaho
- Project Routes
  State Highway 21
- Project Phase
  In Construction
SH-44 and Palmer Lane Traffic Signal

The Idaho Transportation Department is developing plans to install a traffic signal at the intersection of State Highway 44 and Palmer Lane.
- Project Regions
  Southwest Idaho
- Project Routes
  State Highway 44
- Project Phase
  In Construction
I-84 Centennial Way to Franklin Road

Construction began November 2023. Work will be complete in 2027.
- Project Regions
  Southwest Idaho
- Project Routes
  Interstate 84
- Project Phase
  In Construction Planning & Design
I-84 Karcher Interchange

A redesigned interchanged will increase safety and mobility in Nampa.
- Project Regions
  Southwest Idaho
- Project Routes
  Interstate 84 State Highway 55
- Project Phase
  In Construction
I-90 SH-41 Interchange

ITD is reconstructing the I-90 and SH-41 interchange in Post Falls, along with making improvements to SH-41 and nearby local roads, to enhance safety, traffic flow and connectivity in the area.
- Project Regions
  North Idaho
- Project Routes
  Interstate 90
- Project Phase
  In Construction
I-84 Jerome to Twin Falls

ITD is widening I-84 between the South Jerome Interchange and the Twin Falls Interchange. These improvements will increase capacity and improve safety on I-84 to serve the region for years to come.
- Project Regions
  South-Central Idaho
- Project Routes
  Interstate 84
- Project Phase
  In Construction
Soda Springs US-30 Road Reconstruction

This project will reconstruct US-30 through Soda Springs from the east city limit to the west city limit.
- Project Regions
  Southeast Idaho
- Project Routes
  US-30
- Project Phase
  In Construction
I-90 Widening: SH-41 to US-95

The first project from the I-90 Corridor Study aims to improve safety and traffic volume capacity.
- Project Regions
  North Idaho
- Project Routes
  Interstate 90
- Project Phase
  In Construction
SH-3 St. Maries River Bridge replacement and pavement rehab

ITD will reconstruct seven miles of SH-3 between Fernwood and Clarkia and fully replace the St. Maries River Bridge to improve safety and reliability for drivers.
- Project Regions
  North Idaho
- Project Routes
  State Highway 3
- Project Phase
  In Construction
I-90 Wolf Lodge to Cedars

A two-year project is underway to resurface an 8-mile stretch of I-90 over Fourth of July Pass, improving safety and ride quality while extending the life of the roadway.
- Project Regions
  North Idaho
- Project Routes
  Interstate 90
- Project Phase
  In Construction
I-90 Bridges near Cataldo

ITD is working on a full replacement of the eastbound and westbound I-90 bridges over the Coeur d'Alene River near Cataldo. Construction will take place in two phases from 2025 to 2026.
- Project Regions
  North Idaho
- Project Routes
  Interstate 90
- Project Phase
  In Construction