McNary Dam Powerhouse Door Replacement
Full Project Name: McNary Lock and Dam Powerhouse Door Replacement and Rail Removal
Location: Colombia River, McNary Dam, Lake Wallula
Agency: US Army Corps of Engineers, Walla Walla District
Verdis is the prime contractor for the replacement of existing vertical lift doors with a new door system, including mechanical hoisting equipment, electrical power and controls, and an access walkway. The existing door is a 14 foot wide by 33 foot tall 4 section vertical lift door installed in 1949. Rail removal will consist of concrete demolition, removal of two 130 foot long railroad rails, concrete backfill, and installation of 750 square feet of 6 inch by 6 inch quarry tiles to match the existing powerhouse floor.