A crash involving a commercial vehicle on Interstate 15 near Inkom brought southbound traffic to a near standstill Monday morning, creating significant backups in an area already dealing with reduced capacity from an active construction zone.
Idaho State Police are investigating the crash, which happened at approximately 9:30 a.m. in the southbound lanes near milepost 56. The stretch of highway had already been reduced to two lanes due to ongoing construction work before the collision further disrupted traffic flow.
Southbound Lanes Blocked, Traffic Rerouted
With the southbound lanes blocked at the crash site, transportation officials redirected traffic to alternate through the northbound lanes in both directions. The arrangement created considerable delays and backups throughout the area as drivers waited for vehicles to pass through in alternating patterns.
Milepost 56 on I-15 falls in the corridor between Pocatello and the small community of Inkom in Bannock County — a stretch of highway frequently traveled by commercial freight, commuters, and summer travelers moving between southeast Idaho and points south.
The presence of a commercial vehicle in the crash is particularly significant in a construction zone, where slower speeds and tighter lane configurations can complicate emergency response and traffic management. As of Monday morning, no information had been released regarding injuries to any parties involved, nor had investigators disclosed a cause for the collision.
Construction Zone Conditions Compounded the Impact
The timing and location of the crash amplified its effect on the traveling public. Construction zones along I-15 in Bannock County have already narrowed the available lanes for drivers, meaning any incident in those corridors has an outsized impact on traffic compared to a crash on a fully open stretch of interstate.
Motorists traveling southbound on I-15 through the Inkom area Monday morning encountered significant delays as emergency responders and Idaho State Police worked to manage the scene. Drivers heading into the area were urged to expect extended wait times and consider alternate routes where possible.
Southeast Idaho has seen a stretch of challenging road conditions this summer. Earlier this month, a detached wheel on State Highway 36 triggered a two-vehicle crash that left three people requiring airlift transport — a reminder of the serious consequences that can result from vehicle-related incidents on Idaho roadways.
Adding to the difficult conditions for travelers, the National Weather Service office in Pocatello issued a heat advisory for southeast Idaho as temperatures approached 101 degrees — conditions that can affect both driver alertness and the performance of commercial vehicles over long hauls.
What Comes Next
Idaho State Police continue to investigate the cause of the crash near milepost 56. No timeline has been provided for when the southbound lanes of I-15 near Inkom will fully reopen, and no official update on injuries had been released as of Monday morning. Bannock County News will update this story as additional information becomes available from Idaho State Police or the Idaho Transportation Department. Drivers planning to use I-15 through the Inkom corridor are encouraged to check current road conditions before traveling. For additional Idaho news and statewide traffic updates, visit idahonews.co.