SH-21 between Sourdough and Banner Summit closed after rockslide

Maintenance crews using heavy equipment to clear rockslide debris from a mountain highway with snow along the roadside.

A major rockslide happened overnight on State Highway 21 which has closed the highway between Sourdough and Banner Summit.

Crews are at the site of the slide assessing conditions and damage and preparing a plan for cleanup.

At this time the expected duration of the closure is not known. Drivers should use Idaho 511 as the best source information regarding closures and detour routes.

Additional information will be released once it is available.