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I-86/I-15 System Interchange

The Idaho Transportation Department is working to improve the I-86/I-15 System Interchange in the Pocatello/Chubbuck metropolitan area.

This project aims to improve safety, mobility, and economic opportunity by upgrading the roadway to current engineering standards, replacing the aging, functionally obsolete bridge structures and improving the turning movements for motorists for better overall function of the system interchange​.

Project Updates

You can now receive project updates directly from ITD via email. Click here to sign-up!

Latest Update:

The northwest ramp from I-15 to I-86 reopened this morning (September 28, 2022) at the System Interchange in Pocatello. Traffic heading from I-15 toward Chubbuck and American Falls is no longer detoured through the Northgate Interchange. The detour was needed to lower the ramp so new bridges can be built for I-15 through the System Interchange.

Motorists should carefully follow signs and posted speed limits while travelling through the construction area. With crews working day and night it is especially important that drivers be alert and proceed safely through the work area. Drivers are encouraged to check or the 511 app to keep track of road conditions and construction.

This project is partially funded with Transportation Expansion and Congestion Mitigation (TECM) funds as part of Governor Little’s Leading Idaho initiative. The program allows ITD to accelerate project timelines to address rapid growth and build critical infrastructure today that would otherwise take many years to fund and build.

View of System Interchange in Pocatello showing northwest ramp with traffic



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