LaGrange Lock and Dam is a lock and dam complex on the Illinois River at Versailles, Illinois.

The U.S. Army Corps of Engineers built the complex from 1936 to 1939; A.F.

The lock and dam, as well as a similar lock and dam near Peoria, were needed when the authorized channel depth was raised to nine foot.

[2][3] The structure was added to the National Register of Historic Places on March 10, 2004.

This article about a property in Brown County, Illinois on the National Register of Historic Places is a stub.