Slow down for Work Zones
Learn more about driving safely in road construction & maintenance work. Stay alert & be careful throughout a work zone.
Popular Services & Guides
How we're improving Idaho
Our projects touch every corner of the state and boost quality of life for communities, travelers & visitors.
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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.
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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.
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I-15 Inkom Corridor
ITD is rebuilding I-15 structures at three locations in and near Inkom.
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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.
Recent News
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May 29, 2026
Traffic to shift on US-30 in McCammon this Saturday
Paving project at McCammon includes traffic shift on US-30 this Saturday.
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May 29, 2026
Signal construction resumes Monday at SH-39 and Pocatello Ave. in American Falls
Traffic signal scheduled for installation in American Falls.
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May 29, 2026
Southbound I-15 traffic changes scheduled for Sunday night between Pocatello and Fort Hall
Traffic shift on I-15 between Pocatello and Fort Hall scheduled for this weekend.
Upcoming Events
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June 16, 2026 8:00 AM –
June 17, 2026 5:00 PM MST
Transportation Board Meeting – June 2026
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June 19, 2026 12:00 AM– 11:59 PM MST
Juneteenth
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June 24, 2026 8:00 AM –
June 26, 2026 5:00 PM MST
ACE Academy 2026