Monday, December 2, 2024

1870 Ewalt/43rd Street and 1924,1991 Washington Crossing/40th Street Bridges over Allegheny River at Pittsburgh, PA

1870: (Archived Bridge Hunter; Satellite, south termination.)
1924: (Archived Bridge Hunter; Historic Bridges; HAER; HAER_drawingsPGHbridges; Satellite, 100 photos)

The Washington Crossing Bridge was finished in 1924. This 2,432' (741m) long bridge has a main span of 380' (116m). The 1991 rehabilitation retained "a relatively high level of historic integrity" [HistoricBridges] 
The vertical clearance is 180' (55m) at the center of the arches and 72.5' (22m) at the spring lines of the arches. [PGHbridges]
 
Street View, Jul 2017

HAER PA,2-PITBU,26--12 (CT)
12. 3/4 VIEW FROM NORTHWEST. - Washington Crossing Bridge, Spanning Allegheny River at Fortieth Street (State Route 2124), Pittsburgh, Allegheny County, PA

Jackson-Township historical preservation posted
This was the 43rd Street Bridge in Pittsburgh, also known as the Ewalt Street Bridge. It was built in 1870 and connected Butler Plant Road in Millvale to 43rd Street (formerly Ewalt Street) in Lawrenceville. The bridge was demolished in 1924 and replaced with the Washington Crossing Bridge at 40th Street. The 43rd Street Bridge was the last covered bridge in Pittsburgh.
(Photo from John Schalcosky via https://www.facebook.com/groups/132768683480072/)
John Lee: Butler PLANK Road.
Dan Swartz: Knowing the location of the remaining retaining wall for this bridge and its height above normal pool I would say the river in this picture was at high flood level.

"Significance: The Washington Crossing Bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a successful collaboration between architects and engineers in the design and construction of the bridge, add to its significance. The bridge is also significant because its construction was the culmination of a conflict over Allegheny River bridge heights between the U.S. War Department and local governments. The Washington Crossing Bridge was listed in the National Register of Historic Places in 1988." [HAER_data]
 
PGHbridges

These signals confirm that the middle lane is reversible.
Street View, Nov 2022

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