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Rock Hill Road

Photos 

bridge at rockhill

Photo taken by Sean McDonnell in December 0000

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BH Photo #204101

Map 

Street View 

Description 

FROM THE 1996-2001 PENNSYLVANIA HISTORIC BRIDGE SURVEY: The 2-span, 256'-long, rivet-connected Pratt thru truss bridge built in 1923 has all built-up members of standard steel sections. It has lattice railings, rolled floorbeams and stringers, open steel grid deck, and fieldstone abutments and pier with concrete caps. The rivet-connected Pratt thru truss type/design came into increasing use in the 1890s as a result of improvements in field pneumatic riveting equipment, and it was common by the first decade of the 20th century for highway applications. The Pratt truss type/design is the most common in the state with over 375 examples. This later example is complete, but it has no unusual or noteworthy features. The bridge is not historically or technologically distinguished by its setting or context. It is not located in a potential historic district.

Facts 

Overview
Pratt through truss bridge over Conestoga river on Rock Hill Road
Location
Lancaster County, Pennsylvania
Builder
- H. W. Crawford
Design
Two-span riveted Pratt through truss
Dimensions
Length of largest span: 128.0 ft.
Total length: 255.9 ft.
Deck width: 15.4 ft.
Also called
South Creek
Conestoga Cross-over
Approximate latitude, longitude
+39.96156, -76.36554   (decimal degrees)
39°57'42" N, 76°21'56" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/383370/4424383 (zone/easting/northing)
Quadrangle map:
Conestoga
Inventory numbers
PANBI 21878 (Pennsylvania BRKEY bridge number on the 2011 NBI)
BH 47616 (Bridgehunter.com ID)
Inspection (as of 06/2014)
Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 66.0 (out of 100)
Average daily traffic (as of 2012)
400

Update Log 

  • January 19, 2014: New Street View added by Luke Harden
  • January 19, 2014: Updated by Tony Dillon: Fixed overview
  • October 27, 2013: Updated by Clark Vance: Added category "H. W. Crawford"
  • October 27, 2013: New photos from Jodi Christman
  • May 4, 2013: Updated by Jodi Christman: Merged NBI data & listed popular name
  • July 13, 2011: Updated by Sean McDonnell: added number of spans
  • January 11, 2011: Added by Daniel Hopkins

Sources 

  • Daniel Hopkins - chimera [at] clovermail [dot] net
  • Sean McDonnell
  • Jodi Christman - masterofchaos [at] outlook [dot] com
  • Tony Dillon - spansaver [at] hotmail [dot] com
  • Luke