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The five miles of I-90 from SH-41 to US-95 are the most heavily traveled and congested in the corridor. Construction started in early fall 2025 and is  anticipated to be completed in 2029.

Existing I-90 and Seltice Way at the Centennial Trail intersection and underpass.
Improvements

  • Add two lanes in each direction, for a total of four lanes eastbound and four lanes westbound

  • Replace and widen bridges over Huetter Road, Atlas Road, and Prairie Trail

  • Realign and improve impacted sections of Prairie Trail and Centennial Trail

  • Lengthen existing interchange on- and off-ramps at SH-41, Northwest Boulevard, and US-95 to allow for safer merging with I-90 traffic

The I-90 widening improvements between SH-41 and US-95 are underway and anticipated to take four construction seasons to complete.
Drivers can expect:​​

  • Work typically Monday-Friday, with some night and weekend activity

  • Two-lane traffic maintained in each direction during daytime hours

  • Nighttime lane reductions as needed

  • Variable speed limits — watch for posted speed limits in the work zone and drive accordingly

  • Short-term detours on Huetter and Atlas roads during bridge construction

  • Ramp closures for up to one week for widening and reconstruction, as needed

  • Reduced shoulder widths throughout the project area

  • Intermittent impacts to the trails, including detours and gravel surfaces

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Please note: Construction schedules and impacts are subject to change. 

Visit itdprojects.idaho.gov/pages/i90corridor for more details. Interested in signing up for email and/or text updates? Use the buttons below!

SH-41 TO US-95 WIDENING 

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