English: Lock and Dam Number 2 on the Allegheny River at O'Hara Township, Allegheny County, Pennsylvania, USA (part of the Pittsburgh metropolitian area). The lock and dam were built by the U.S. Army Corps of Engineers as a part of an extensive system of locks and dams to improve navigation along the Allegheny River. The Highland Park bridge crosses the river just above the dam.
{{Information | Description = {{en|Lock and Dam Number 2 on the Allegheny River at Aspinwall, Pennsylvania, USA (part of the Pittsburgh metropolitian area). The lock and dam were built by the U.S. Army Corps of Engineers as a part of an extensive syste
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