THE DALLES DAM has received a $10.5 million contract with a Vancouver company to implement safety work on the structure’s gate and anchors, along with other work on the downstream gate. Funding for the contract came from the U.S. Army Corps of Engineers.
THE DALLES DAM has received a $10.5 million contract with a Vancouver company to implement safety work on the structure’s gate and anchors, along with other work on the downstream gate. Funding for the contract came from the U.S. Army Corps of Engineers.
The Dalles Chronicle file photoPORTLAND – The U.S. Army Corps of Engineers has awarded a $10.5 million contract to a Vancouver, Wash. company to increase navigation lock reliability and safety at The Dalles Lock and Dam on the Columbia River.
The Corps said in a news release the project will reduce the risk of gate failure at the dam, which is a key point on the Columbia-Snake river inland navigation system.
Every year, the dam hosts transit of 9 million tons of cargo worth $3 billion, including about 40 percent of the nation’s wheat.
With funding from the U.S. Corps, Northbank Civil and Marine, Inc. will fabricate and install a new upstream navigation lock gate and new gudgeons anchors — the top hinges and anchor points — on the downstream gate. The contract also contains options for control systems upgrades and additional work on the downstream gate.
“The upstream gate and controls systems are original equipment from when The Dalles Dam was completed in 1957…they’re well beyond their 50-year design service life,” said Jeff Ament, Corps project manager. “The downstream gate was replaced in 2010-2011, but the gudgeon anchors and other items were not a part of that project.”
This work will coincide with major improvements, critical repairs and routine maintenance at other navigation locks throughout the Columbia-Snake river inland navigation system. A 14-week closure of those locks is scheduled to start Dec. 12, 2016.
For more information about the upcoming Columbia-Snake river extended navigation lock outage and to sign up for email notification of updates, visit nww.usace.ar-my.mil/Missions/Navigation/FY17LockOutage.aspx.
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