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North Cascades Highway set to reopen after weeks of snow cleanup

The North Cascades is covered in mud and rock after clearing efforts in a photo published Monday, April 15, 2024.
The North Cascades is covered in mud and rock after clearing efforts in a photo published Monday, April 15, 2024. Courtesy to The Bellingham Herald

You’ll be able to get your dose of Eastern Washington sunshine this weekend, when the North Cascades Highway opens Friday morning after its winter closure.

Scenic Highway 20 connects Whatcom and Skagit counties with the Okanogan County destination towns of Winthrop and Twisp, along with hiking and other recreational opportunities in the North Cascades National Park.

It’s the northernmost highway that crosses the Cascades Mountains in Washington state.

Because of avalanche danger from the high slopes of Washington Pass and Rainy Pass, the highway is closed in late fall near Diablo on the west side and Mazama on the east side.

Opening time is 10 a.m. Friday, the state Department of Transportation said in an email.

Clearing efforts began this year on March 25. It typically takes four to six weeks with crews using heavy equipment such as bulldozers, excavators and massive snow blowers to clear snow eight feet deep or more.

After the snow is cleared, WSDOT crews usually have to repair guardrails, patch potholes and fix places where the road washed out.

Weather at the passes could still mean snowy and freezing weather, WSDOT said on its social media. Crews will clear and treat the highway as needed, but travelers should be watch the weather forecasts and prepared for changing conditions.

This story was originally published April 18, 2024 at 5:00 AM.

Robert Mittendorf
The Bellingham Herald
Robert Mittendorf covers civic issues, weather, traffic and how people are coping with the high cost of housing for The Bellingham Herald. A journalist since 1984, he also served 22 years as a volunteer firefighter for South Whatcom Fire Authority before retiring in 2025.
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