UPDATE as of 7:55 p.m.
Avalanche work has been completed and the road has been cleared of mud and snow.
A section of state Route 410 just east of the Chinook Pass summit will be closed until at least 8 p.m. tonight due to a mud and snow slide, according to the state Department of Transportation.
The slide is covering the roadway at milepost 72, two miles east of the pass summit. Workers are trying to remove debris from SR 410 and do avalanche control.
Officials will assess the safety of reopening the area at 8 p.m.