Drivers along Idaho’s Highway 55 faced major disruption after a serious crash near Smiths Ferry on Monday led to a full shutdown of the roadway in both directions, according to Idaho State Police and local traffic reports. The incident occurred near mile marker 93.5, a heavily traveled stretch of the Payette River Scenic Byway.
Authorities confirmed that troopers were dispatched to the scene shortly after reports of the crash came in. Upon arrival, emergency crews found the highway fully blocked as responders worked to secure the area, assess the situation, and begin a formal investigation into what caused the incident.
At this time, officials have not released confirmed details regarding how many vehicles were involved or whether there were injuries or fatalities. Investigators remain on site, collecting evidence and coordinating with emergency response teams. The scene required coordinated efforts between Idaho State Police, tow services, and highway maintenance crews to manage traffic and ensure safety.
The closure caused significant delays along Highway 55, a critical north–south route connecting the Boise area with recreation destinations in central Idaho. Because the corridor runs through steep canyon terrain along the North Fork of the Payette River, there are limited alternative routes, making closures especially disruptive for commuters, freight traffic, and travelers heading to McCall and surrounding areas.
Officials urged drivers to avoid the area entirely and seek alternate routes while emergency operations were underway. Motorists were also advised to expect extended delays as crews worked to clear the roadway and investigate the crash site.
The stretch near Smiths Ferry is known for sharp curves, narrow lanes, and changing weather conditions, all of which can contribute to increased crash risk, particularly during heavy traffic periods. Authorities regularly remind drivers to exercise caution in this corridor due to its challenging mountain road conditions.
As of the latest updates, the highway has been gradually reopening in phases after crews completed initial emergency work, though full normalization of traffic flow is expected to take time depending on cleanup and investigation progress.
Further details are expected once Idaho State Police complete their preliminary findings and release additional information about the cause and outcome of the crash.