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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 10, 2026
Construction to begin tomorrow on SH-21 Mores Creek Bridge
ITD is starting construction on SH-21 tomorrow, Sept. 11.
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September 10, 2026
Public invited to kickoff meeting on Wednesday for Roadway Safety Audit of US-26
The audit is a coordinated, impartial examination conducted through Idaho’s Office of Highway Safety. The Idaho Transportation Department requested an audit following multiple severe crashes on US-26
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September 8, 2026
ITD to remove railroad bridge over US-95 in Culdesac Canyon next week
ITD plans to start construction on Sept. 09 on US-95 to remove Lapwai Creek Railroad Bridge
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