SR 20 North Cascades Highway closed for season due to avalanche risk

(WINTHROP)– With 15 inches of new snow and wet weather in the forecast, State Route 20 North Cascades Highway is officially closed for the season between Ross Dam trailhead (milepost 134) and Silver Star gate (milepost 171) as of Monday, Nov. 18.

The route was closed temporarily on Friday, Nov. 15 ahead of forecasted snowfall. Conditions were reassessed on Monday morning. The road will remain closed for winter for the safety of crews and the traveling public due to avalanche risk, according to a news release from the Washington State Department of Transportation.

The road will reopen in spring after crews clear the snow and make needed repairs. Historical opening and closing dates are available on the WSDOT website.