On February 1, 2016, Northbank Civil and Marine was selected by the US Army Corps of Engineers on a best value basis for The Dalles Navigational Lock Upstream Gate Replacement, Controls Upgrade, and Downstream Gate Gudgeon Replacement. The total value of the project is $11,917,300. The project will occur during the extended navigational lock outage that is scheduled from December 12, 2016 through March 20, 2017.
The upstream gate replacement consists of removal of the old upstream gate, fabrication and installation of a new upstream gate, replacement of the gate anchorage system, and replacement of the gate operating machinery and controls. The downstream gate work includes replacement of the gudgeons, quoin and miter block adjustments, diagonal tensioning, seal replacement, and installation of an impressed current cathodic protection system. The controls upgrade includes upgrades of the navigational lock’s control system and installation of a new power distribution system.