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Larimer Avenue Bridge

Photos 

Photo taken by Historic American Engineering Record

View photos at Library of Congress

BH Photo #137230

Map 

Street View 

Description 

At the time of its construction, the bridge was the world's longest reinforced concrete arch span. The bridge was part of a large public works program in Pittsburgh responding to several reports critical of the city's civic and transportation infrastructure. Details of the bridge's construction provide valuable insights into the use of reinforced concrete, still a relatively new material when the bridge was completed.

- Historic American Engineering Record

Facts 

Overview
Open-spandrel arch bridge over Washington Blvd. on Larimer Avenue in Pittsburgh
Location
Pittsburgh, Allegheny County, Pennsylvania
Status
Open to traffic
Future prospects
Slated for demolition and replacement. City actively seeking demolition funds.
History
Built 1912; rehabilitated 1981
Builders
- John A. Ferguson (Designer)
- John F. Casey Co. (Contractor)
Design
Open-spandrel arch
Dimensions
Length of largest span: 299.9 ft.
Total length: 547.9 ft.
Deck width: 29.9 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+40.46667, -79.90833   (decimal degrees)
40°28'00" N, 79°54'30" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/592547/4480127 (zone/easting/northing)
Quadrangle map:
Pittsburgh East
Inventory numbers
PA 02 7301 0000 3047 (Pennsylvania Bridge Management System number)
PANBI 02419 (Pennsylvania BRKEY bridge number on the 2011 NBI)
BH 30261 (Bridgehunter.com ID)
Inspection (as of 08/2009)
Deck condition rating: Fair (5 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 50.6 (out of 100)
Average daily traffic (as of 2009)
8,000

Update Log 

  • January 18, 2017: New photo from Dave King
  • January 7, 2016: Updated by Nathan Holth: This bridge is now doomed.
  • April 18, 2009: Posted HAER photos

Sources 

  • HAER PA-488 - Larimer Avenue Bridge, Spanning Washington Boulevard at Larimer Avenue (State Route 8), Pittsburgh, Allegheny County, PA
  • James Baughn - webmaster [at] bridgehunter [dot] com
  • Nathan Holth
  • Historicbridges.org - by Nathan Holth
  • Dave King - DKinghawkfan [at] hotmail [dot] com

Comments 

Larimer Avenue Bridge
Posted January 7, 2016, by Nathan Holth (webmaster [at] historicbridges [dot] org)

This is one of the most significant historic concrete bridges in Pittsburgh yet is slated for demolition!

http://pittsburgh.cbslocal.com/2016/01/06/pittsburgh-dealing...