40.3 ft (12.3 m) above Emsworth Dam normal pool level (710 ft (220 m) above sea level)
November 26, 1926
Rachel Carson Bridge, also known as the Ninth Street Bridge, spans the Allegheny River in DowntownPittsburgh, Pennsylvania. The total length is 840 feet (260 m) including the 410-foot (120 m) main span and two 215-foot (66 m) side spans, or 995 feet (303 m) including the approaches. The total width of the deck is 62 feet (19 m), including the 38-foot (12 m) roadway plus two 10-foot (3.0 m) sidewalks outside the compressive plate girder. Whereas the roadway formerly carried two vehicle lanes and two streetcar tracks, it now carries two wide vehicle lanes.
The bridge was dedicated and opened at a noon ceremony with Commissioner Babcock, Mayor Kline, and city council members including Herron and McArdle. The cost of construction was $1.46 million or $19.5 million in 2015 terms.
From south bank of the Allegheny, looking NE, oblique view of roadway and south tower, showing eyebar links for main suspenders and roadway suspenders, as well as main compressive stiffening girders dividing roadway from sidewalks
Plaque on North Shore of the Rachel Carson Bridge.