Rating:
7 votes

Sister Bridge II: Andy Warhol Bridge

Photos 

Seventh St. Bridge

Middle of the Three Sisters Bridges

Photo taken by Brian McKee in January 2009

Enlarge

BH Photo #131294

Map 

Street Views 

Facts 

Overview
Suspension bridge over Allegheny River on Seventh Street in Pittsburgh
Location
Pittsburgh, Allegheny County, Pennsylvania
Status
Open to traffic
History
Built 1926; rehabilitated 1977
Builders
- American Bridge Co. of New York (Superstructure)
- Foundation Co. of New York (Substructure)
Design
Self-anchored eyebar suspension
Dimensions
Length of largest span: 442.0 ft.
Total length: 1,061.1 ft.
Deck width: 37.4 ft.
Vertical clearance above deck: 16.2 ft.
Recognition
Posted to the National Register of Historic Places on January 7, 1986
Also called
Seventh Street Bridge
Approximate latitude, longitude
+40.44667, -80.00167   (decimal degrees)
40°26'48" N, 80°00'06" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/584660/4477813 (zone/easting/northing)
Quadrangle map:
Pittsburgh West
Inventory numbers
PA 02 7301 0000 2013 (Pennsylvania Bridge Management System number)
NRHP 86000018 (National Register of Historic Places reference number)
PANBI 02382 (Pennsylvania BRKEY bridge number on the 2011 NBI)
BH 30305 (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: 47.4 (out of 100)
Average daily traffic (as of 2005)
12,990

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
  • January 6, 2009: Updated by Ian Anderson
  • January 4, 2009: New photos from Brian McKee

Sources 

  • Brian McKee - bjmckee51 [at] yahoo [dot] com
  • Ian Anderson - macsignals [at] gmail [dot] com
  • Jason Smith - flensburg [dot] bridgehunter [dot] av [at] googlemail [dot] com
  • HAER PA-490-B - Three Sisters Bridges, Seventh Street Bridge, Spanning Allegheny River at Seventh Street, Pittsburgh, Allegheny County, PA
  • Patrick S. O'Donnell - 1 [dot] 991km [at] comcast [dot] net
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com

Comments 

Seventh Street Bridge
Posted September 30, 2008, by Ian Anderson (macsignals [at] gmail [dot] com)

These 3 bridges are also all self-anchored spans.

Seventh Street Bridge
Posted November 29, 2007, by Jay Nicks (jnicks11 [at] juno [dot] com)

This is an eye bar Suspension Bridge.