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Loop Road Bridge

Lancaster County, Pennsylvania
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Description 

FROM THE 1996-2001 PENNSYLVANIA HISTORIC BRIDGE SURVEY: The 2-span bridge built in 1940 consists of a 100'-long, rivet-connected Pratt pony truss span and a 54'-long steel thru girder span. The bridge is supported on stone abutments and pier. The truss has built-up chords and end posts, and rolled section diagonals and verticals. Channel railings are set to the inside faces of the trusses and atop the thru girders. Both the rivet-connected Pratt truss and the thru girder are bridge types/designs developed in the 19th century. Numerous examples from the 1890s to 1956 are found throughout the state. This late example has no unusual or noteworthy details. It is not historically or technologically distinguished by its setting or context.

Facts 

Overview
Pony truss bridge over Pequea Creek on Loop Road
Location
Lancaster County, Pennsylvania
Status
Open to traffic
Future prospects
On Lancaster County Remove List. This is a long-term list of bridges to demolish and not replace.
History
Built 1940; rehabilitated 1970
Builder
- H. W. Crawford
Design
Rivet-connected Pratt pony truss span and a steel thru girder span
Dimensions
Length of largest span: 100.1 ft.
Total length: 153.9 ft.
Deck width: 18.0 ft.
Approximate latitude, longitude
+39.92247, -76.32224   (decimal degrees)
39°55'21" N, 76°19'20" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/387004/4419989 (zone/easting/northing)
USGS topographic map
Conestoga
Inventory numbers
PA 36 7224 0413 1511 (Pennsylvania Bridge Management System number)
BH 31105 (Bridgehunter.com ID)
Inspection (as of 09/2006)
Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 32.2 (out of 100)
Average daily traffic (as of 2000)
300

Categories 

Built 1940 (686)
Built during 1940s (2,795)
Doomed (786)
Girder (3,233)
H. W. Crawford (7)
Lancaster County, Pennsylvania (121)
Open (28,302)
Owned by county (16,483)
Pennsylvania (3,037)
Pequea Creek (10)
 Plate girder (2,248)
Pony truss (13,215)
Pratt pony truss (2,341)
Pratt truss (5,654)
Span length 100-125 feet (3,299)
Structurally deficient (16,677)
Through girder (1,134)
Total length 125-175 feet (4,136)
Truss (23,562)

Update Log 

  • May 28, 2012: Updated by Jodi Christman: Added builder and description and bridge design
  • March 22, 2011: Updated by Nathan Holth: This bridge is now doomed.
  • September 5, 2010: Updated by D. Thomsen: Pequea Creek
  • April 25, 2009: Updated by Brian McKee

Sources 

  • Brian McKee - bjmckee51 [at] yahoo [dot] com
  • D. Thomsen - dcthomsen [at] comcast [dot] net
  • Nathan Holth
  • Jodi Christman - masterofchaos [at] outlook [dot] com

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