1938,1991 Mississippi Lock and Dam #3 near Red Wing, MN

(Satellite)

USACE
"Constructed and placed in operation July 1938. The site underwent major rehabilitation from 1988 through 1991. The dam is 365' [111m] long with four roller gates. More than 2,000 feet [610m] of earth embankment with a series of upstream spot dikes completes the structure to create Pool 3."

USACE, St. Paul District posted

In celebration of our 250th anniversary we #TBT to July 21, 1938, when construction was completed on Lock and Dam 3 in Welch, Minnesota.  

The dam is 365 feet long and includes four submersible roller gates. With 2009 federal and American Recovery and Reinvestment Act contributions, an 862-foot-long guide wall extension was completed in April 2011 and a closure dike to mitigate outdraft conditions near the guide wall was completed in October 2011.

RepublicanEagle, File photo

A view with the roller gates all of the way up.

2:14 video @ 0:41

Steve Nieckarz, Aug 2018

Steve Nieckarz, Aug 2018

USACE_report
I'm writing this on Jul 13, 2025, and the gates are all the way up for dams 3, 5a, 9 and 10.

The lock closes when the flow exceeds 125kcfs. [RepublicanEagle]