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Bergeys Mill Road Bridge near Lederach, PA

Montgomery County, Pennsylvania
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Photos 

Bergeys Mill Road Bridge - April 26, 2009

Overview

Photo taken by Raymond Klein

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Map 

Description 

FROM THE 1996-2001 PENNSYLVANIA HISTORIC BRIDGE SURVEY: 'The 2 span, 196'-long, pin-connected Pratt thru truss bridge built in 1893 is supported on a stone substructure. It was fabricated by John Denithorne & Sons of Phoenixville, the details of the bridge, including the verticals, upper sway bracing, and portal bracing, reflect period thinking about truss members. Denithorne was successful marketing his bridges to Chester and Montgomery counties into the 20th century. The bridge has some alterations, but they do not adversely impact its significant details and overall integrity. It is historically and technologically significant because of its association with the Denithorne company and what that illustrates about metal truss bridges were built during the last quarter of the 19th century and for its technological significance.'

View Uglybridges.com report

Facts 

Overview
Through truss bridge over East Branch Perkiomen Creek on Bergeys Mill Road near Lederick
Location
Montgomery County, Pennsylvania
Status
Open to traffic
History
Built 1893; rehabilitated 1985
Builder
- John Denithorne & Sons of Phoenixville, Pennsylvania
Design
Pratt through truss
Dimensions
Length of largest span: 94.2 ft.
Total length: 195.9 ft.
Deck width: 15.1 ft.
Vertical clearance above deck: 10.1 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+40.25689, -75.42972   (decimal degrees)
40°15'25" N, 75°25'47" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/496302/4430717 (zone/easting/northing)
USGS topographic map
Quakertown, PA
Inventory numbers
PA 46 7046 0210 0146 (Pennsylvania Bridge Management System number)
PANBI 27913 (Pennsylvania BRKEY bridge number on the 2011 NBI)
BH 31336 (Bridgehunter.com ID)
Inspection (as of 07/2009)
Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 11.8 (out of 100)
Average daily traffic (as of 1977)
175

Categories 

19th Century (3,822)
8-panel truss (238)
Built 1893 (121)
Built during 1890s (1,556)
John Denithorne & Sons (3)
Montgomery County, Pennsylvania (159)
NR-eligible (3,751)
One-lane traffic (7,112)
Open (28,319)
Owned by county (16,492)
 Pennsylvania (3,038)
Pin-connected (1,521)
Pratt through truss (3,166)
Pratt truss (5,660)
Skewed (4,080)
Span length 75-100 feet (4,720)
Structurally deficient (16,683)
Through truss (9,211)
Total length 175-250 feet (2,790)
Truss (23,575)

Update Log 

  • May 5, 2012: Updated by Jodi Christman: Added description
  • May 26, 2009: New photo from Raymond Klein
  • April 30, 2009: New photo from Raymond Klein

Sources 

  • Raymond Klein - Bookshelfthe [at] msn [dot] com
  • Jodi Christman - masterofchaos [at] outlook [dot] com
  • Historicbridges.org - by Nathan Holth

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