U.S. Army Corps of Engineers
National Great Rivers Museum
#2 Locks and Dam Way
Alton, IL 62002
The National Great Rivers Museum is located adjacent to the Melvin Price Locks and Dam on the Illinois side of the Mississippi River in Alton, IL.
From I-270 North: Take the 367 North exit toward Alton, turn right onto Highway 143 (formerly the Berm Highway). Turn Right at Locks and Dam Way, Continue to the National Great Rivers Museum Parking lot.
From I-55 South: Take the 270 West exit, exit onto Highway 3 North. Turn left at 143. Turn left at Locks and Dam Way, Continue to the National Great Rivers Museum Parking Lot.
Office: (618) 462-6979
Open Daily: 9:00 am - 5 pm
We are closed on Thanksgiving, Christmas Eve and Christmas Day, New Years Eve and New Years Day. There are no admission fees to the facility. The museum is ADA accessible. Restrooms, bus parking and picnic facilities are available.