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COVER PAGE

Historic American Engineering Record (HAER)
Heritage Conservation and Recreation Service
Historic American Buildings Survey - Collection of the Library of Congress

Smithfield Street Bridge
PA-2 (LOC call number: HAER, PA,2-PITBU,58-)
Location: Pittsburgh, Pennsylvania; UTM: 17.584630.4476290; Quad: Pittsburgh West
Date of Construction: Completed 1883; Altered 1891
Present Use: Highway Bridge (initial use)
Significance: Designed by Gustav Lindenthal, one of America's most famous bridge engineers, as a two-lane bridge. One lane was erected in 1883, and another was added in 1891. The span is Pittsburgh's most graceful and makes use of a double lenticular truss, patented in America by Edwin Stanley in 1851.
Historian: James D. Van Trump, 1974

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