INKOM — The Idaho Transportation Department will temporarily close Interstate 15 Exit 58 at West Inkom for three weeks beginning May 26, to allow contractors to perform extensive work at the interchange.

The construction work will include lowering the roadway beneath the I-15 bridges, installing new drainage structures, rebuilding the off-ramp and building a new, lengthened on-ramp to meet modern standards.

A detour will be in place through mid-June. Drivers can use Exit 63 at Portneuf Area along Old Highway 91 to access Interstate 15 during the closure.

ITD is advising motorists to watch for work crews, use caution and remain alert while traveling through the work zone.

The work in Inkom and on the I-15 corridor is part of a multi-year effort that began last year to replace the I-15 bridges over Main Street, Rapid Creek Road and the Union Pacific Railroad. In 2025, the three southbound bridges were replaced.

This year, crews are focusing on the northbound bridges, with work scheduled to be completed in late October 2026.

To learn more about the project or to sign up for construction updates, visit itd.idaho.gov/project/inkom-corridor/.

Motorists can also visit 511.idaho.gov for current road conditions.