US Army Corps of Engineers
Rock Island District

121024-A-OH748-003
A new miter gate is maneuvered into position at Lock and Dam 21 by the Mississippi River Project Structural Maintenance Unit. The new gates were installed in November 2011 and are the first new miter gates in the Rock Island District at a 600-foot lock.

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Photo by: Aaron Dunlop |  VIRIN: 121024-A-OH748-003.JPG