Maxwell Lock and Dam is a navigational lock and gated dam on the Monongahela River between Centerville in Washington County, and Luzerne Township in Fayette County in Pennsylvania. It is part of a series of dams that canalizes the Monongahela to a depth of at least for its entire length from Fairmont, West Virginia to Pittsburgh, Pennsylvania. It is maintained by the U.S. Army Corps of Engineers, Pittsburgh District. Maxwell has two lock chambers located on the right-descending river bank. The dam's upper pool extends about upstream to Grays Landing Lock and Dam at Grays Landing, Pennsylvania. History Construction on Maxwell Lock and Dam began in 1960 and was completed in 1965. It replaced old Lock and Dam 6 at Rices Landing, Pennsylvania. See also List of crossings of the Monongahela River References Buildings and structures in Fayette County, Pennsylvania Buildings and structures in Washington County, Pennsylvania Dams in Pennsylvania Monongahela River United States Army Corps of Engineers, Pittsburgh District United States Army Corps of Engineers dams Dams completed in 1965 Transportation buildings and structures in Fayette County, Pennsylvania Transportation buildings and structures in Washington County, Pennsylvania