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.

Project Materials

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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

Project Updates

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Fall 2017

Hold working group meetings with ITD and the Shoshone-Bannock Tribes

Spring 2018

Prepare preliminary design plans. Host working group meetings with ITD and the Shoshone-Bannock Tribes

Summer 2018

Host community open house to gather input on preliminary design plans

Fall 2018 - Winter 2019

Review input and prepare final design plans

Spring 2019

Host community open house to gather input on final design plans

Summer 2022

Construction funding anticipated; begin construction

Downloads & Resources

May 2019 Display Boards

Display boards Maps

Fact Sheet

2019 Overview

May 2018 Open House Displays

Fort Hall Interchange Displays Fort Hall Open House Summary

Preliminary Design Maps (May 2018)

Fort Hall Interchange Simplot Road