Slow down for Work Zones
Learn more about driving safely in road construction & maintenance work. Stay alert & be careful throughout a work zone.
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 Construction
SH-16 will improve regional mobility, provide access to I-84 in the rapidly growing central Treasure Valley, and improve commutes for thousands of motorists.
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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.
Recent News
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May 11, 2026
2026 Aviation Art Contest Winners
Thank you to all the students who participated and congratulations to all the winners!
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May 8, 2026
Construction to begin Monday at Riverton Road Bridge
Construction is slated to begin Monday May 11 to replace the Riverton Road bridge at Blackfoot.
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May 7, 2026
Temporary access restrictions in place on areas of the pedestrian portion of the Long Bridge
A recent safety inspection revealed areas of concern on the Long Bridge pedestrian bridge that require temporary access restrictions as further evaluation is completed and until repairs can be made.
Upcoming Events
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May 13, 2026 8:00 AM –
May 14, 2026 5:00 PM MST
Transportation Board Meeting – May 2026
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May 13, 2026 8:30 AM– 12:00 PM MST
Trucking Advisory Council Meeting
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May 21, 2026 1:00 PM– 3:00 PM MST
Negotiated Rulemaking Meeting 2026