Concrete revetment northeast from cofferdam. A cofferdam is a temporary structure created to expose areas that are normally underwater so that work, such as creating supports or repairs can be completed.
November 1st, 5
Pittsburgh City Photographer Collection
Pittsburgh City Photographer Collection, 1901-2002, AIS.1971.05, Archives Service Center, University of Pittsburgh
Waterworks--Pennsylvania--Pittsburgh--Design and construction.; Retaining walls--Pennsylvania--Pittsburgh.; Lincoln-Lemington-Belmar (Pittsburgh, Pa.).
Public Domain - Anybody may use this photo for any purpose
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Copyright 2015 Dane Pieri