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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 3, 2026
ITD invites community to learn about I-84 ‘A’ Canal bridges replacement
The Idaho Transportation Department invites the community to an open house on Sept. 10 to review and give feedback on the plans to replace two Interstate 84 bridges over the A Canal west of Heyburn.
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September 2, 2026
Southbound I-15 ramp closure at Fort Hall expected Thursday night
The southbound off-ramp at the Fort Hall Interchange (Exit 80) will close for approximately one hour beginning at 7 p.m. Thursday evening.
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September 1, 2026
Upcoming bridge maintenance to impact traffic on I-90 east of CDA through fall
Drivers traveling east of Coeur d'Alene on I-90 should expect to encounter traffic impacts and possible delays through late fall as maintenance work begins on the Blue Creek Bay Bridge.
Upcoming Events
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September 7, 2026 12:00 AM–11:59 PM MST
Labor Day
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September 10, 2026 5:00 PM–7:00 PM MST
I-84 ‘A’ Canal Bridges Replacement Public Meeting
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September 16, 2026 8:00 AM –
September 17, 2026 5:00 PM MST
Transportation Board Meeting – Sept. 2026