Olmsted Locks and Dam - AbsoluteAstronomy.com

The Olmsted Locks and Dam is a concrete dam

Dam

A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...

and locks project currently under construction on the Ohio River

Ohio River

The Ohio River is the largest tributary, by volume, of the Mississippi River. At the confluence, the Ohio is even bigger than the Mississippi and, thus, is hydrologically the main stream of the whole river system, including the Allegheny River further upstream...

at river mile 964.4. It is located near Olmsted, Illinois

Olmsted, Illinois

Olmsted is a village in Pulaski County, Illinois, along the Ohio River. The population was 299 at the 2000 census.-Geography:Olmsted is located at ....

. The lock chambers will be 110 feet (33.5 m) wide and 1200 feet (365.8 m) long.

Construction Stages Timeline
Nov. 1992 - June 1994	Build access road and resident engineers office.
May 1993 - Dec. 1995	Construction of lock cofferdam on the Illinois shore. Cost approximately $58 million.
1994 - Dec. 1995	Build prototype at Smithland Locks and Dam to select materials.
Dec. 1995 - Mar. 2002	Construction of lock chambers. Cost $271.5 million
Sept. 2001 - July 2005	Install bulkheads. Cost $24.2 million.
June 2001 - Oct. 2002	Relocate Olmsted boat ramp downstream.
Scheduled	Operational buildings and service mound.
Jan. 2004 - 2014	Construction of tainter gates and navigable pass dam.
Scheduled	Demolition of Locks and Dams 52 and 53.

Source: US Army Corps of Engineers website

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