Mt Loop Hwy - Waldheim Slide Repair

Snohomish County Public Works Department plans to complete mitigation work near the Waldheim Slide, at milepost 20 on the Mountain Loop Highway. Crews completed emergency repairs in 2010 and 2011. Federal funding and other regulations require the county to complete mitigation work to address the impacts of the emergency repairs.

The project will install woody debris in the river downstream of the slide to improve in-stream fish habit. The areas that were disturbed by the slide and emergency repair work will be replanted, and a wetland will be created near Little Beaver Creek.
The Waldheim Slide mitigation work is expected to begin in 2015 after permits are obtained. 

Traffic Impacts
Single-lane road closures may occur at the time of construction.

Environmental Review
Environmental documentation includes: