The westbound on-ramp will close at the I-84 South Jerome Interchange (Exit 168) in late May

South Jerome Interchange

The Idaho Transportation Department (ITD) will close the westbound on-ramp (heading toward Boise) at the I-84 South Jerome Interchange (Exit 168) on Tuesday, May 28. The ramp will remain closed for a few months while crews build the new westbound on-ramp.

Traffic will be detoured to the Main Street/Highway 25 Interchange (Exit 165). Motorists will be directed north on S Lincoln Avenue, west on W Avenue D, north on S Birch Street and west on W Main Street/Highway 25. Click here to see a detour map.

Motorists can continue to expect intermittent local road closures, I-84 lane closures, traffic shifts and ramp changes throughout the duration of the project. Construction is anticipated to be completed in 2026.

Details about the I-84 South Jerome Interchange project are available at or by texting 84JTF to 1-866-483-8422.

Drivers should check before traveling to plan for impacts from this project and other work zones.