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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June 19, 2026
New American flag display will honor history of Fourth of July Pass
North Idaho maintenance crews are preparing to install a large American flag display on an overpass at the top of Fourth of July Pass next week to honor both the history of the pass and America250.
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June 19, 2026
I-90 westbound traffic changes starting next week in CDA
Traffic changes for both the interstate and Prairie Trail will make travel safer and easier and allow crews to continue ongoing work.
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June 18, 2026
Sealcoat to begin Monday on US-95 between Wilder and Parma
ITD sealcoat between Wilder and Parma begins.
Upcoming Events
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June 24, 2026 8:00 AM –
June 26, 2026 5:00 PM MST
ACE Academy 2026
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July 3, 2026 12:00 AM– 11:59 PM MST
Independence Day (Observed)
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July 7, 2026 1:30 PM– 3:00 PM MST
Dealer Advisory Board Meeting