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 12, 2026
Resurfacing to begin Monday on SH-33 Business Spur in Rexburg
Construction will eliminate street parking in the area work is occurring and happen mostly through the night as crews create a smoother ride through Rexburg.
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June 11, 2026
ITD and SPOT partner to provide transportation across Long Bridge during pedestrian path closure.
ITD and SPOT have partnered to offer short-term transit services to the community in the wake of closing of the pedestrian Long Bridge.
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June 11, 2026
SH-167 to reopen today following Navy aircraft crash
State Highway 167 is open to traffic following cleanup and roadway repairs after the Navy aircraft crash.
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