The movable portion of the dam is 1,340 feet (408.4 m) long and consists of 15 submersible, elliptical, tainter gates.
A 2,720 feet (829.1 m) submersible earthen dike extends from the movable dam to the Illinois shore.
[2] In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No.
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