Rachel Carson Bridge
|Rachel Carson Bridge|
Rachel Carson Bridge as seen from the roof of the David L. Lawrence Convention Center
|Official name||Rachel Carson Bridge|
|Other name(s)||Ninth Street Bridge|
|Total length||840 feet (256 m) spans (main and 2 215 side spans) 995 feet (303 m) with approaches|
|Width||38 ft roadway (formerly 2 vehicle, 2 tramway tracks, now 2 wide vehicle lanes) 10 ft sidewalks (outside the compressive plate girder) or total 62 ft|
|Longest span||410 feet (125 m)|
|Vertical clearance||above 78 ft towers|
|Clearance below||deck is 40.3 ft above Emsworth Dam normal pool level (710 ft above sea level)|
|Opened||26 November 1926|
Named for the naturalist Rachel Carson, a Pittsburgh native, it is one of three parallel bridges called The Three Sisters, the others being the Roberto Clemente Bridge and the Andy Warhol Bridge. The Three Sisters are self-anchored suspension bridges and are significant because they are the only trio of nearly identical bridges—as well as the first self-anchored suspension spans—built in the United States.
The bridge was renamed on Earth Day, April 22, 2006, after years of lobbying by Esther Barazzone, president of Chatham University, the alma mater of the renowned environmentalist. Carson was born in 1907 in Springdale, Pennsylvania in a farmhouse 18 miles up the Allegheny River, now the Rachel Carson Homestead.
- List of bridges documented by the Historic American Engineering Record in Pennsylvania
- List of crossings of the Allegheny River
|Wikimedia Commons has media related to Rachel Carson Bridge.|
- Historic American Engineering Record (HAER) No. PA-490-C, "Three Sisters Bridges, Ninth Street Bridge"
- Ninth Street Bridge at Structurae
- entry at pghbridges.com
- entry at BridgeMeister.com
- Jerome L. Sherman (2006). Carson Bridge Dedication: story by Pittsburgh Post-Gazette. Retrieved April 23, 2006.