Popular Services & Guides
Welcome to the new and improved ITD website
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 30, 2026
ITD begins signal installation at SH-45 and Locust Lane
SH-45 and Locust signalized in May.
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January 28, 2026
Construction resumes next week on SH-75 in Ketchum
Starting Monday the Idaho Transportation Department will resume construction on State Highway 75 at the Trail Creek Bridge in Ketchum to accommodate growing traffic volumes in the Wood River Valley.
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January 26, 2026
Snowplow operators do more than just plow snow
With little snowfall this winter, ITD snowplow operators are working on unique, needful projects.
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