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Idaho Department of Transportation


Scarsella Brothers Proceed With Idaho I-90 Interchange Rebuilding

The Idaho Transportation Department (ITD) is reconstructing the interchange at Interstate 90 and State Highway 41 in Post Falls, as well as improving SH 41 and local roads surrounding the interchange. The project was awarded to Scarsella Brothers Inc....


Multiple Projects Under Way On SH 55 Between Boise, Lewiston

Construction season is kicking off on State Highway 55, a vital link in the north-south corridor connecting Boise and Lewiston. With Idaho's short summer construction window and the need for warm temperatures before snowfall returns, the Idaho Transportation Department (ITD) is working on several key projects along SH 55 to maintain and improve the critical route....


SH 75 Improvement Project Near Ketchum, Idaho, Debuts

The Idaho Transportation Department (ITD) began construction in late April 2025 on a $28.5 million project to improve safety and capacity on State Highway 75 between Elkhorn Road and River Street. Construction is expected to be completed in late 2026....


ITD Speeds Interchange Construction Along SH-16 Corridor in Treasure Valley

The Idaho Transportation Department will accelerate the construction of multiple interchanges along State Highway 16 in the central Treasure Valley with Leading Idaho funds. The entire corridor is expected to open by 2027, a year earlier than planned....


Clearwater Memorial Bridge Project Nears End, Opens to Traffic

The Clearwater Memorial Bridge project on U.S. 12 in Clearwater County, Idaho, is mostly complete and opened to both vehicular and pedestrian traffic on Dec. 4, 2024, according to the Moscow-Pullman Daily News....


Eight I-15 Bridges Open in Idaho, Project Still Ongoing

A $112 million Pocatello, Idaho, interstate project under construction for more than two years reached a milestone this fall as crews opened all eight bridges in the rebuild. "We're really excited to finally have all the I-15 traffic moved to the new mainlines," Idaho Department of Transportation (ITD) Project Engineer Greg Roberts said....


Idaho Transportation Department Maintenance Team Prevails at National Snow Roadeo

The largest group of competitors ever (about 330) at the Snow & Ice Conference and National Snow Roadeo in Loveland, Colo., couldn't slow down the Idaho Transportation Department maintenance team, which won the national "Top Agency" title for the third time in the last four years....


Idaho Transportation Department Celebrates Its 50th Birthday

The Idaho Transportation Department (ITD) turns 50 years old this year, celebrating half a century of connecting Idaho's travelers with their many destinations. On July 1, 1974, the Idaho Transportation Department was officially established, bringing together the Department of Highways, Aeronautics, Public Transportation, and the Traffic Safety Commission under one department....


Idaho Officials Approve Resolution for Bridge Construction

The Idaho Transportation Board approved a resolution to begin next steps to enhance Magic Valley regional mobility, including consideration of a third Snake River crossing near Twin Falls. ITD was approved to utilize up to $9 million to initiate recommendations presented based on a feasibility study developed with stakeholder interviews, traffic evaluations, design reviews, and close coordination with the Third River Joint Powers Board, the city of Twin Falls, and the Magic Valley Metropolitan Planning Organization....


Longest-Serving Member of Idaho Transportation Board Jim Kempton to Retire

Jim Kempton, who has served the eight south-central Idaho counties as the District 4 representative on the Idaho Transportation Board since March 2012, is set to retire at the end of the month. At 11 years of service, Kempton is the longest-serving board member....







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