I-15 West Inkom interchange to close for weeks as construction continues

INKOM, Idaho (KIFI) — The Idaho Transportation Department will temporarily close the Interstate 15 West Inkom interchange beginning May 26 as construction crews continue work on a major bridge replacement project in the area.

According to ITD, Exit 58 at West Inkom will close for about three weeks while contractors perform extensive work at the interchange.

The project includes lowering the roadway beneath the I-15 bridges, installing new drainage structures, rebuilding the off-ramp and constructing a new extended on-ramp designed to meet modern safety standards.

During the closure, drivers will be detoured to Exit 63 at Portneuf Area and directed along Old Highway 91 to access I-15. The detour is expected to remain in place through mid-June.

Transportation officials are urging drivers to slow down, watch for crews and use caution while traveling through the work zone.

The construction is part of a multi-year project to replace the I-15 bridges over Main Street, Rapid Creek Road and the Union Pacific Railroad.

Last year, crews replaced the three southbound bridges. This construction season, work is focused on the northbound bridges, with the overall project expected to be completed in late October 2026.

More information and construction updates are available through the Idaho Transportation Department at ITD Inkom Corridor Project Page. Current road conditions are also available at 511 Idaho.