5 votes

Sister Bridge III: Rachel Carson Bridge


Oblique view

Photo taken by James Baughn in July 2009


BH Photo #143666


Street View 


Suspension bridge over Allegheny River on Ninth Street in Pittsburgh
Pittsburgh, Allegheny County, Pennsylvania
Open to traffic
Built 1926; rehabilitated 1993
- American Bridge Co. of New York (Superstructure)
- Foundation Co. of New York (Substructure)
Self-anchored eyebar suspension
Length of largest span: 430.1 ft.
Total length: 995.1 ft.
Deck width: 38.1 ft.
Vertical clearance above deck: 15.6 ft.
Posted to the National Register of Historic Places on January 7, 1986
Also called
Ninth Street Bridge
Approximate latitude, longitude
+40.44644, -79.99961   (decimal degrees)
40°26'47" N, 79°59'59" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/584835/4477790 (zone/easting/northing)
Quadrangle map:
Pittsburgh East
Average daily traffic (as of 2005)
Inventory numbers
PA 02 7301 0000 2014 (Pennsylvania Bridge Management System number)
NRHP 86000019 (National Register of Historic Places reference number)
PANBI 02383 (Pennsylvania BRKEY bridge number on the 2011 NBI)
BH 30279 (Bridgehunter.com ID)
Inspection report (as of May 2017)
Overall condition: Poor
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 57.6 (out of 100)
View more at BridgeReports.com

Update Log 

  • April 8, 2017: Updated by Christopher Finigan: Added category "Self-anchored suspension"
  • July 24, 2016: New photo from Royce and Bobette Haley
  • August 26, 2014: New photos from Patrick S. O'Donnell
  • March 24, 2012: HAER photos posted by Jason Smith
  • November 15, 2010: New photos from Jason Smith
  • November 14, 2010: Updated by Jason Smith: Changed the name of the bridge
  • July 27, 2009: New photos from James Baughn
  • April 18, 2009: Posted HAER photos


  • HAER PA-490-C - Three Sisters Bridges, Ninth Street Bridge, Spanning Allegheny River at Ninth Street, Pittsburgh, Allegheny County, PA
  • James Baughn - webmaster [at] bridgehunter [dot] com
  • Jason Smith - flensburg [dot] bridgehunter [dot] av [at] googlemail [dot] com
  • Todd Wilson
  • Historicbridges.org - by Nathan Holth
  • Patrick S. O'Donnell - 1 [dot] 991km [at] comcast [dot] net
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com