Rating:
1 vote

Walnut Lane Bridge

Photos 

View West, Bridge Deck

Photo taken by Historic American Engineering Record

View photos at Library of Congress

BH Photo #210309

Map 

Street View 

Facts 

Overview
Pre-Stressed Concrete Stringer bridge over Lincoln Dr,Monoshone Creek on Walnut Lane
Location
Philadelphia, Philadelphia County, Pennsylvania
Status
Open to traffic
History
Built 1949; rehabilitated 1990
Design
First pre-stressed concrete girder bridge in the US.
Dimensions
Length of largest span: 160.1 ft.
Total length: 311.0 ft.
Deck width: 44.0 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+40.03278, -75.18778   (decimal degrees)
40°01'58" N, 75°11'16" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/483978/4431412 (zone/easting/northing)
Quadrangle map:
Germantown
Inventory numbers
PA 67 4015 0020 0000 (Pennsylvania Bridge Management System number)
BH 45930 (Bridgehunter.com ID)
Inspection (as of 02/2008)
Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Sufficiency rating: 81.3 (out of 100)
Average daily traffic (as of 2008)
7,845

Update Log 

  • April 13, 2012: New Street View added by Jodi Christman
  • August 18, 2010: Added by D. Thomsen

Sources 

  • D. Thomsen - dcthomsen [at] comcast [dot] net
  • HAER PA-125 - Walnut Lane Bridge, Spanning Lincoln Drive & Monoshone Creek at Walnut Lane, Philadelphia, Philadelphia County, PA
  • Nathan Holth
  • Wikipedia
  • Jodi Christman - masterofchaos [at] outlook [dot] com

Comments 

Walnut Lane Bridge
Posted April 13, 2012, by Julie Bowers (jbowerz1 [at] gmail [dot] com)

What are the numbers coming back from the new concrete bridges. Do we have any statistics on life span or maintenance for those.

Thanks Nathan, I can always count on you for the dirt. I am also defining, in few words, "Restoration In-Kind". I checked out Bridgeport and Vern and a few other sites for those words and am coming up with the bullets for our proposal. I shall post when more complete.

Walnut Lane Bridge
Posted April 12, 2012, by Nathan Holth

Julie,

Read the HAER data pages for the bridge. http://lcweb2.loc.gov/pnp/habshaer/pa/pa1700/pa1791/data/pa1... You will see in their detailed discussion that the bridge deteriorated rapidly, giving many problems over time. The 1990 rehab was so extensive and required so much removal of original bridge material it is described in one place as a superstructure replacement. The extent of the "rehab" apparently also was an adverse effect under Section 106, triggering the production of the aforementioned HAER documentation.

In Michigan, we also have an early, histoic pre-stressed concrete bridge. It also shows deterioration: http://www.historicbridges.org/michigan/ganson/

PennDOT claims pre-stressed concrete bridges last 100 years. I have seen nothing to prove this, and instead many pre-stessed concrete bridges only 50 years old are being replaced. Metal truss bridges are a far more durable and reliable bridge type, as long as the paint system is maintained. To see the potential service life of a historic metal bridge, we must look to the older and more properly maintained bridges of England. Example: http://www.historicbridges.org/inventoryearth/b_a_displaybri...

Walnut Lane Bridge
Posted April 12, 2012, by Julie Bowers (jbowerz1 [at] gmail [dot] com)

Rehabilitation in 1990. Do you know how it stood up to time Nathan (or any of you), or what the rehab was? Just checking my facts as to how lone a concrete bridge will utilimately last, versus a maintenance plan on a truss bridge.

Walnut Lane Bridge
Posted April 12, 2012, by Nathan Holth

It should be noted that this is the first MAJOR pre-stressed concrete bridge. I found a 1950 advertisement in the Technograph that suggests that the famous Roebling Sons and Company may take credit for the first... or one of the first... pre-stressed concrete bridges, said bridge having been constructed in Madison County, Tennessee.

Roebling Sons always specialized in wire, and the tensioned tendons within pres-stressed concrete are also wire-like so it makes sense that Roebling Sons was involved with pre-stressed concrete.

Walnut Lane Bridge
Posted August 18, 2010, by D. Thomsen (dcthomsen [at] comcast [dot] net)

NBI #674015002000000, but where does this number go?