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 7, 2026
Island Park traffic signal installation begins next week
A new traffic light at the intersection of US-20 and Yale-Kilgore Road will mark changes for motorists through this popular scenic area.
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May 6, 2026
Buckle Up, Idaho: Click It or Ticket begins May 11
The Idaho Transportation Department’s Office of Highway Safety is partnering with law enforcement agencies statewide for the 2026 Click It or Ticket campaign, running May 11–31.
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May 6, 2026
Maintenance work to begin on Jump Creek Bridge on US-95 near Homedale
ITD is conducting routine maintenance on bridges throughout Idaho.
Upcoming Events
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May 13, 2026 8:00 AM –
May 14, 2026 5:00 PM MST
Transportation Board Meeting – May 2026
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May 13, 2026 8:30 AM– 12:00 PM MST
Trucking Advisory Council Meeting
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May 21, 2026 1:00 PM– 3:00 PM MST
Negotiated Rulemaking Meeting 2026