DIABLO, Wash. -

State highway officials are temporarily closing State Route 20 for the weekend because of heavy snow in the forecast.

The North Cascades Highway closure is a 37-mile stretch of Highway 20 between Diablo and west of Mazama.

Crews are closing the road at 9 a.m. Friday.

The state Department of Transportation will reassess on Monday to see if they will re-open that stretch or keep it closed for winter.

The stretch of highway over the North Cascades is typically closed over the winter because of snow and avalanche danger.