Lock and Dam No. 18, Navigation lock and historic district in Gladstone, Illinois, United States
Lock and Dam No. 18 is a navigation facility on the Mississippi River near Gladstone that manages water flow and boat passage. The structure consists of multiple gates designed to raise and lower vessels safely between different water levels.
The facility was built between 1934 and 1937 by the United States Army Corps of Engineers. It emerged from a major effort to develop infrastructure and improve navigation along the Mississippi River during that period.
The 2,049-acre historic district encompasses one building, four structures, and four objects, representing early 20th-century engineering achievements on the National Register of Historic Places.
Visitors can watch commercial and recreational boats navigate through the locking system while the gates operate. The facility is most active during warmer months when river traffic increases, offering better chances to see the system in action.
The facility was one of many similar locks built across the Mississippi during the 1930s as part of a national effort to control river flow and improve commerce. This particular location represents the engineering innovations that were applied to navigation challenges of that era.
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