The Washington State Department of Transportation says it hopes to reopen the North Cascades Highway at noon Thursday.
Late last week, rain-caused mudslides in several areas closed a stretch of the highway, also known as Highway 20.
Transportation officials say crews are making good progress in clearing a half-dozen slides.
The highway is the northernmost route across the Cascade Mountains.
Avalanches typically close the highway for winter between late November and mid-December. It usually reopens by early May.