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I-15 Fort Hall Interchange

The new interchange design will serve the Fort Hall community and the traveling public for many years.

ITD is working with the Shoshone-Bannock Tribes, the local community and the public to design a new interchange at Exit 80 (Fort Hall) on Interstate 15.

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Project Details

Exit 80 (the Fort Hall Interchange) is the primary entrance into the Fort Hall community from Interstate 15. The current interchange was constructed in 1958.

The new interchange design will include:

  • Two lanes in either direction with a center lane on the bridge over I-15 (Simplot Rd.)
  • Longer and wider interchange ramps
  • A six-foot shoulder for safer pedestrian and bicycle crossing
  • Six new bridges over Ross Fork Creek and the Town Lateral Canal
  • Improved lighting and landscaping
  • Improved irrigation and cattle guards

    • Fall 2017
    Hold working group meetings with ITD and the Shoshone-Bannock Tribes
    Asset 5
    Spring 2018
    Prepare preliminary design plans. Host working group meetings with ITD and the Shoshone-Bannock Tribes
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    Summer 2018
    Host community open house to gather input on preliminary design plans
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    Fall 2018 - Winter 2019
    Review input and prepare final design plans
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    Spring 2019
    Host community open house to gather input on final design plans
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    Summer 2022
    Construction funding anticipated; begin construction
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    Downloads & Resources

    May 2019 Display BoardsAsset 4
    Display boards Maps
    Fact SheetAsset 4
    2019 Overview
    May 2018 Open House DisplaysAsset 4
    Fort Hall Interchange Displays Fort Hall Open House Summary
    Preliminary Design Maps (May 2018)Asset 4
    Fort Hall Interchange Simplot Road
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