Rating:
1 vote

Dorrington Road Bridge

Allegheny County, Pennsylvania

Photos 

Dorrington Rd Bridge

Photo taken by Brian McKee in January 2009

Enlarge

BH Photo #131265

Map 

Facts 

Overview
Lost pony truss bridge over Robinson Run on Dorrington Road
Location
Allegheny County, Pennsylvania
Status
Demolished to make way for replacement bridge
History
Built 1888 by the Pittsburgh Bridge Co.; demolished 2009
Builder
- Pittsburgh Bridge Co. of Pittsburgh, Pennsylvania
Design
Wrought iron, pin-connected, 5-panel Pratt pony truss with vertical endposts
Dimensions
Length of largest span: 55.1 ft.
Total length: 60.0 ft.
Deck width: 15.7 ft.
Approximate latitude, longitude
+40.39380, -80.11111   (decimal degrees)
40°23'38" N, 80°06'40" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/575531/4471980 (zone/easting/northing)
Quadrangle map:
Pittsburgh West
Average daily traffic (as of 2010)
675
Inventory numbers
PA 02 3117 0020 1056 (Pennsylvania Bridge Management System number)
BH 30237 (Bridgehunter.com ID)
Inspection report (as of October 2009)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 14.1 (out of 100)
View more at BridgeReports.com

Categories 

19th Century (7,333)
5-panel truss (485)
Allegheny County, Pennsylvania (416)
Bridgemapper.com (1,326)
Built 1888 (216)
Built during 1880s (1,947)
Formerly NR-eligible (443)
Historic Bridge Weekend 2009 (19)
Lost (23,913)
Lost 2009 (326)
Lost during 2000s (4,113)
One-lane traffic (7,563)
Owned by state (15,699)
 Pennsylvania (5,171)
Pin-connected (3,833)
Pittsburgh Bridge Co. (35)
Pony truss (16,033)
Pratt pony truss (3,586)
Pratt truss (9,137)
Replaced by new bridge (15,977)
Span length 50-75 feet (9,937)
Structurally deficient (14,784)
Total length 50-75 feet (9,165)
Truss (32,310)
Vertical endposts (68)
Wrought Iron (388)

Update Log 

  • September 8, 2009: New photo from Louise Sturgess
  • August 29, 2009: Bridge has been demolished according to Bridgemapper.com
  • July 15, 2009: Scheduled for demolition on July 20, 2009
  • January 4, 2009: Updated by Brian McKee

Sources 

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Comments 

Dorrington Road Bridge
Posted July 18, 2014, by ArtS (asuckewer [at] knite [dot] com)

Here is a nice write-up on the bridge:

http://pghbridges.com/pittsburghW/0575-4471/dorrington_ewing...

Dorrington Road Bridge
Posted September 8, 2009, by Anthony Dillon (spansaver [at] hotmail [dot] com)

Another reckless homicide committed by PennDOT.......

Dorrington Road Bridge
Posted August 15, 2009, by Anthony Dillon (spansaver [at] hotmail [dot] com)

This bridge....at the very least.....should have dismantled and stored as the Beatty Mills Bridge was.