Melvin Price Locks and Dam is a dam and two locks at river mile 200.78 on the Upper Mississippi River, about 17 miles (27 km) north of Saint Louis, Missouri. The collocated National Great Rivers Museum, at 1 Lock and Dam Way, East Alton, Illinois, explains the structure and its engineering.Before you visit East Alton, use our trip planner to discover what you can do and see there.
Construction began in 1979, the main lock opened in 1990, and the full structure was completed in 1994. It replaced the earlier Lock and Dam No. 26, demolished in 1990, and is the first replacement structure on the Upper Mississippi River nine-foot navigation project. The main lock is 1,200 feet (370 m) long and 110 feet (34 m) wide; the auxiliary is 600 feet (180 m) long and 110 feet (34 m) wide. The main lock has a vertical lift gate and a miter gate while the aux. lock has two miter gates. The dam is 1,160 feet (350 m) long with 9 tainter gates, each 110 feet (34 m) wide by 42 feet (13 m) high.
It is named after Illinois Congressman Charles Melvin Price.
Create an itinerary including Melvin Price Locks and Dam
Melvin Price Locks and Dam reviews
Nice visit to see the dam and surrounding wetlands for the birds. Nice wildlife habitat for birds passing through this fly way. more »
Our guide Travis took us on a fabulous (free) educational adventure up on top of the dam. If you haven't seen a boat pass through a functioning lock and dam system, this is your chance! more »
Plan your trip to East Alton
Get a personalized tripA complete day by day itinerary
based on your preferences
Customize itRefine your trip. We'll find the
best routes and schedules
Manage itEverything in one place.
Everyone on the same page.
Side trips from East Alton
Trips to Melvin Price Locks and Dam by other users
1 day in East Alton BY A USER FROM UNITED STATES Lewis and Clark Confluence Tower Melvin Price Locks and Dam 60 days in Illinois BY A USER FROM CANADA Chicago Makanda Alton 14 days in Great Rivers & Routes BY A USER FROM ISLE OF MAN Alton 1 day in Hartford BY A USER FROM UNITED STATES Edward Ted and Pat Jones- Confluence State Park Melvin Price Locks and Dam 18 days in United States BY A USER FROM UNITED STATES Saint Charles Lexington Louisville 17 days in Great Rivers & Routes BY A USER FROM UNITED KINGDOM Alton