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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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August 21, 2026
Comment now on Idaho’s draft Long-Range Transportation Plan
ITD invites the public to review the draft Long-Range Transportation Plan and provide feedback by Sept. 20.
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August 21, 2026
Southbound I-15 ramp closures at Northgate expected this weekend
Traffic will be shifting to the new southbound lanes on I-15 this weekend. Ramp closures will be necessary to connect the ramps with the new lanes.
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August 20, 2026
Repaving at Garrity Interchange in Nampa begins Friday night
ITD will be closing I-84 Garrity Interchange in Nampa for repaving Aug. 21-Aug. 24.
Upcoming Events
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August 27, 2026 4:30 PM–6:30 PM MST
Banks Lowman Intersection Improvement Project Public Meeting
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September 1, 2026 5:00 PM–7:00 PM MST
Banks Lowman Intersection Improvement Project Public Meeting
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September 7, 2026 12:00 AM–11:59 PM MST
Labor Day