MOUNT ST. HELENS SPIRIT LAKE TUNNEL INTAKE

Project Scope: The multifaceted project focuses primarily on Spirit Lake’s drainage issues. Re-establishing the road from Windy Ridge to the south shore of the lake would allow access the area to make it easier to replace the aging intake gate. The proposed access road would be built along an old road used by the U.S. Army Corps of Engineers in the early 1980s that generally tracks along the Truman TrailSpirit Lake Gate Replacement will include to the following items:• A temporary access road.• A lake-side barge loading facility consisting of an earthen ramp, and a staging area• Mechanical Dredging from barges or floating work platforms• Construction of and working behind a cofferdam• Replacement of inlet gate, design of slide gate, hydraulic steel structures• Concrete repair to