Snowy forecast means State Route 20 North Cascades Highway will close
Information released by WSDOT
Washington State Department of Transportation crews close this stretch of SR 20 every year once snow fills the avalanche chutes that line the highway, which poses a safety risk to travelers and road crews.
Road closure points
The closure points start at milepost 134/Ross Dam Trailhead and at milepost 171/Silver Star Gate. When significant snow begins to fall, WSDOT crews will move the western closure point back to milepost 130/Colonial Creek Campground and the eastern closure point to milepost 178/Early Winters Campground. These weather-dependent changes usually happen in January. Signs along SR 20 are posted in advance of the closure point and updates on the WSDOT website will reflect where the road is closed.
Winter recreation on SR 20
Hikers, skiers, snowmobilers and other recreationalists can access the closed portion of highway during the winter season. Users should park in designated parking areas to allow plow drivers the space they need to clear snow around the closed stretch’s access gates.
WSDOT closes this stretch of highway due to avalanche risk, so anyone using this area should check forecasts and be aware of quickly changing conditions in the mountains. Travelers can also check conditions with North Cascades National Park before trips to this area.