Lock at the The Dalles Dam
THE DALLES The Dalles navigation lock on the Columbia River will remain closed for eight to 10 days while engineers repair its downstream gates, the Army Corps of Engineers said today.
Engineers found extensive cracking on both sides of the lower portion of the downstream gate, according to the Corps. Repairs were expected to start Friday night, including welding and bolting plates to stabilize the gate.
"The situation is worse than we anticipated," Col. Steven R. Miles, Portland District commander, said in a statement. "The Corps team has completed its inspection and we have a team of engineers and welders working around the clock to repair the cracks."
"We understand how important the navigation lock is to the shippers who transport their goods and commodities on the Columbia River," he said.
The Dalles lock has been operating for 52 years, the Corps said.
Lock Repair: John Day Dam Back in Business by Staff, The Oregonian, 10/29/8
John Day Lock Under Repair by Staff, Wheat Life, 5/8
Domestic Waterborne Commerce, Army Corps of Engineers, Transportation Energy Data 1970-2002
Snake River Freight Army Corps of Engineers, Government Report
Snake River Commodity Tonnage Army Corps of Engineers, Data from 1990-2003
learn more on topics covered in the film
see the video
read the script
learn the songs