Rating:
No votes cast
Pennsylvania Railroad Bridge
Share: 
Description
FROM THE 1996-2001 PENNSYLVANIA HISTORIC BRIDGE SURVEY: The 3 span, 117'-long bridge built in 1904 consists of a rivet-connected Warren pony truss span flanked by built-up thru girder spans. The truss is composed of all built-up members of standard steel sections and plates. It has details associated with other Warren pony truss bridges over the Pennsylvania RR's lines in the region including tapered verticals and T-shaped upper chords of paired angles and plate. It is supported on ashlar abutments and built-up steel bents. The rivet-connected Warren truss bridge type/design emerged as one of the most popular truss designs after 1895. This standardized bridge is not individually distinguished by its technology, but it is significant in historic association with the Enola Low Grade line. The bridge is an original feature of the line, which was engineered for low grades and a minimum of at-grade crossings with local roads. It contributes to the PHMC-determined eligible line.The bridge carries a 2 lane road over an abandoned rail line in a cut in a rural setting of active farms with fields to the northern quadrants. At the southeast quadrant is an early 20th century farmhouse with modern outbuildings. The setting does not have the cohesiveness or integrity of a historic district. The rail line is the former Pennsylvania RR's Atglen & Susquehanna line, also known as the Enola Low Grade, built from 1903 to 1906 as a freight only line to add track capacity and relieve traffic pressure on the Main Line east of Harrisburg. It was electrified from 1936-38. The line has been determined eligible by PHMC (DOE 2/24/94).
Facts
- Overview
- Pony truss bridge over abandoned Pennsylvania Railroad on TR 774
- Location
- Lancaster County, Pennsylvania
- Status
- Open to traffic
- History
- Built 1904; rehabilitated 1950
- Design
- Rivet-connected Warren pony truss span flanked by built-up thru girder spans
- Dimensions
-
Length of largest span: 65.0 ft.
Total length: 117.1 ft.
Deck width: 19.0 ft.
- Approximate latitude, longitude
- +39.92000, -76.07500 (decimal degrees)
39°55'12" N, 76°04'30" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 18/408130/4419431 (zone/easting/northing)
- USGS topographic map
- Gap
- Inventory numbers
- PA 36 7201 0774 5051 (Pennsylvania Bridge Management System number)
BH 31113 (Bridgehunter.com ID) - Inspection (as of 12/2007)
- Deck condition rating: Serious (3 out of 9)
Superstructure condition rating: Critical (2 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 14.6 (out of 100) - Average daily traffic (as of 2005)
- 400
© Copyright 2002-13, James Baughn and contributors.
This page's URL is http://bridgehunter.com/pa/lancaster/367201077450510/
This page's URL is http://bridgehunter.com/pa/lancaster/367201077450510/