Overnight Closure of I-84 at Exit 211 in Heyburn for New Interchange Construction

The Idaho Transportation Department announced yesterday that Interstate 84 at Exit 211 in Heyburn will be closed overnight on June 24 as crews continue work on a new interchange. According to the agency’s press release, the closure will begin at 6 p.m. on Monday, June 24, and the interstate will reopen at 7 a.m. Tuesday morning. During those thirteen hours, crews will remove and replace bridge beams that span over the highway, a job that cannot be done safely while traffic passes underneath. The work is part of a larger reconstruction of the Exit 211 interchange that has been underway for several months. Built more than fifty years ago, the original interchange no longer meets the traffic demands of today’s agricultural and commercial corridor, and the new design will provide longer acceleration and deceleration lanes, higher clearances and improved safety features.

Officials said that local traffic will still be able to use the eastbound on‑ and off‑ramps at Exit 211, but drivers will not be able to pass beneath the structure to continue west or east on I‑84. A signed detour will direct motorists to use the crossroad at Exit 208 (Idaho Highway 27) north of Paul and the one at Exit 216 near Burley. ITD recommends that motorists allow extra travel time and exercise caution around construction workers and equipment. The department also urged drivers not to stop along the interstate to watch the construction activity; heavy equipment will be moving, and stopped vehicles could create hazards.

The Exit 211 reconstruction is part of the Leading Idaho initiative, an infrastructure investment program championed by the state legislature and governor to maintain and modernize vital transportation corridors. ITD District 4 Project Manager Bruce Christensen said in the release that the improved interchange will enhance freight mobility and access to the Cassia County agribusiness hub. He noted that the current interchange was built when traffic volumes were much lower and that today’s mix of heavy trucks and passenger vehicles requires longer ramps and wider shoulders. In addition to replacing the bridge, the project will add additional turn lanes on the crossroad and upgrade lighting and signage to current standards.

When complete later this year, the new interchange will have higher clearance over I 84 and wider lanes on the bridge. The reconstruction is expected to improve safety for both local traffic and interstate travelers by reducing congestion and eliminating the short merging distances that can cause crashes. ITD has encouraged the public to visit the project website for updates and to sign up for email alerts. Department officials said that overnight closures like the one scheduled for June 24 are necessary to lift heavy beams safely, and they thanked the community for its patience. The agency reminds drivers that careful adherence to detour routes and reduced speed limits in construction zones will keep workers and motorists safe.