Welcome to the new and improved ITD website
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 from SH-44 to SH-52
ITD is conducting an environmental reevaluation to gather updated traffic numbers and study potential impacts that improvements would have to the area.
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I-90, US-95 Interchange
The I-90 and US-95 Interchange is the first interchange to advance from the I-90 Corridor Study, with a design focused on expanding capacity, improving safety, and accommodating future traffic growth.
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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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January 21, 2026
Westbound I-84 closes this week between Ten Mile and Garrity interchanges
ITD takes next steps in historic three-level interchange.
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January 21, 2026
N. Idaho District Engineer Damon Allen retires
Damon Allen, who started with ITD in 1999 and was D1/North Idaho's District Engineer since 2007, retired January 16.
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January 21, 2026
ITD, aviation community salutes Bob Hoff in final board meeting Jan. 21
Robert Hoff, who has served as the D6 (East Idaho) representative on the Idaho Transportation Board since March 2019 when appointed by Gov. Brad Little, will serve in his final meeting January 21
Upcoming Events
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February 16, 2026 – MST
Presidents’ Day
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February 19, 2026 – MST
Transportation Board Meeting – Feb. 2026
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March 7, 2026 8:00 AM– 4:30 PM MST
2026 Aviation Safety Stand Down