Due to steep snow and high avalanche risk, the North Cascades Highway (SR 20) is closing for the sesason on Thursday, December 4th at 6 pm.

Depending on Snow Conditions, the Cascades Highway Closes Every Winter.

The Highway typically closes from mid-November to late April or early May. The highway will be closed between the Ross Dam trailheasd (milepost 134) on the west side and the Silver Star gate (milepost 171) on the east side.

Read More: WA State Resident Succumbs to Complications of Avian Influenza

WSDOT crews made the decision to close as an upcoming snow storm is expected Friday. This is the first time since 2019 that the 37-mile stretch of road has closed in December. The past five years, the road has closed in November.

According to historic pass closure data , the e

See Full Page