Lock and Dam No. 25

Lock and Dam No. 25 operates with a 600-foot chamber that manages water levels for vessels traveling along the Upper Mississippi River system.

The United States Army Corps of Engineers constructed this navigation structure as part of a larger system to control water levels on the Mississippi River.

The facility demonstrates the engineering achievements of American infrastructure development and holds a place on the National Register of Historic Places.

The lock chamber processes vessels daily, requiring larger tows to separate their barges for passage, with transit times extending up to three hours.

A new 1,200-foot lock chamber expansion, funded at $732 million, will reduce transit times to under one hour when completed.

Location: Illinois

Location: Missouri

Architects: United States Army Corps of Engineers

Elevation above the sea: 132 m

GPS coordinates: 39.00470,-90.68640

Latest update: March 4, 2025 08:13