• McNary Lock and Dam
  • McNary Lock and Dam
  • McNary Lock and Dam
  • McNary Lock and Dam
  • McNary Lock and Dam
  • McNary Lock and Dam
  • McNary Lock and Dam
  • McNary Lock and Dam
  • McNary Lock and Dam
  • McNary Lock and Dam

McNary Lock and Dam Powerhouse

Full Project Name:  McNary Lock and Dam Powerhouse Door Replacement and Rail Removal
Location:  Columbia River, McNary Dam, Lake Wallula
Agency:  US Army Corps of Engineers – Walla Walla District

Verdis was 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 was a 14-by-33-foot tall, four-section vertical lift door installed in 1949.  Rail removal consisted of concrete demolition, removal of two 130-foot long railroad rails, concrete backfill, and installation of 750 square feet of 6-by-6-inch quarry tiles to match the existing powerhouse floor.

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