Rating:
5 votes

Sister Bridge III: Rachel Carson Bridge

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Photos 

Oblique view

Photo taken by James Baughn in July 2009

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Street View 

Facts 

Overview
Suspension bridge over Allegheny River on Ninth Street in Pittsburgh
Location
Pittsburgh, Allegheny County, Pennsylvania
Status
Open to traffic
History
Built 1926; rehabilitated 1993
Builders
- American Bridge Co. of New York (Superstructure)
- Foundation Co. of New York (Substructure)
Design
Self-anchored eyebar suspension
Dimensions
Length of largest span: 430.1 ft.
Total length: 995.1 ft.
Deck width: 38.1 ft.
Vertical clearance above deck: 15.6 ft.
Recognition
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
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 (as of 05/2009)
Deck condition rating: Fair (5 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 54.5 (out of 100)
Average daily traffic (as of 2005)
22,462

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

Sources 

  • 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
  • HAER PA-490-C - Three Sisters Bridges, Ninth Street Bridge, Spanning Allegheny River at Ninth Street, Pittsburgh, Allegheny County, PA
  • Historicbridges.org - by Nathan Holth
  • Historicbridges.org - by Nathan Holth
  • Historicbridges.org - by Nathan Holth
  • Historicbridges.org - by Nathan Holth
  • Bridgemapper.com - by Todd Wilson and Lauren Winkler
  • Bridgemapper.com - by Todd Wilson and Lauren Winkler
  • Bridgemapper.com - by Todd Wilson and Lauren Winkler
  • Patrick S. O'Donnell - 1 [dot] 991km [at] comcast [dot] net
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com