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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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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.
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I-84 South Jerome Interchange
Crews are working to replace the South Jerome Interchange. The interchange was originally built in 1966, and the new interchange will be a Divided Diamond/Couplet design.
Recent News
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September 11, 2026
ITD to further restrict heavy commercial traffic from using East Kooskia Bridge on Monday due to safety concerns
ITD is reducing the weight restriction on the East Kooskia Bridge to 8 tons starting Monday, Sept. 14.
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September 11, 2026
Fatalities increase during Idaho’s 2026 100 Deadliest Days
90 people were killed in crashes on Idaho roads during the 2026 100 Deadliest Days, the period between Memorial Day and Labor Day when serious and fatal crashes historically rise.
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September 10, 2026
Construction to begin tomorrow on SH-21 Mores Creek Bridge
ITD is starting construction on SH-21 tomorrow, Sept. 11.
Upcoming Events
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September 16, 2026 8:00 AM –
September 17, 2026 5:00 PM MST
Transportation Board Meeting – Sept. 2026
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October 12, 2026 12:00 AM–11:59 PM MST
Columbus Day
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October 14, 2026 8:30 AM–3:00 PM MST
Transportation Board Meeting – Oct. 2026