All lanes in both directions along U.S. Highway 20 from north of Mountain Home to Fairfield were closed Tuesday afternoon because of whiteout conditions, state transportation officials announced.

The 36-mile road closure, from mile markers 116, at the Anderson Dam Road in Dixie, to 152 started just after 2:30 p.m. There was no timeline issued for when the stretch of highway may reopen.

A short video posted by the Idaho Transportation Department to X, formerly known as Twitter, at the time of the closure shows a plow stopped during high winds and low visibility from blowing snow.

An ITD spokesperson did not immediately return a request for an update on the road closure from the Idaho Statesman.

U.S. 20 is a primary route between the Treasure Valley and the Wood River Valley at the Idaho Highway 75 interchange. On Tuesday, Sun Valley Resort north of Ketchum reported 1 inch of snow overnight and in the current storm.