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Higginsville Road Bridge over BR&W RR

Description 

As of 2002, according to the county bridge survey which lists it as DEMOLISHED: "The 4-panel riveted Warren pony truss bridge with original outriggers has floor beams that vary in depth to create the camber. Timber stringers are notched to go over floor beams. The wearing surface is plank. The bridge is supported on ashlar abutments that have been raised twice; concrete caps in 1929, and recent timber grillage. Floor beams were replaced in 1923. The documented, well-preserved bridge is a good, representative example of the truss overpasses from the late 19th century. STRUCTURE # 1050167 ALTERATION DT Demolished: 1997 INFORMATION Bibliography: Archer, Robert. A History of the Lehigh Valley Railroad. 1977. NJDOT. Bridge Plan File: 0501/47.52.

Physical Description: The 43'-long and 12'-wide 4-panel rivet connected iron Warren pony truss bridge is supported on rubble-coursed stone abutments. The superstructure has been raised twice to increase vertical clearance. In 1929 new concrete seats were added. The present timber grillage seat is recent. The top chord, bottom chord, and inclined end posts are composed of angles with riveted web plate. What is of particular note are the T sections, set back to back and fixed together with rivets, that make up the diagonals. This detail has been identified on only a few 1890s bridges in New Jersey. The outriggers are built up of riveted plates. The built-up floor beams are fitted with section brackets upon which the timber stringers that are notched to go over the floor beams bear and give the span a vertical deck profile. The wood elements appear to be inkind replacements of the original details. With the exception of being raised, and having modern beam guide rail added, the bridge appears unaltered.

Historical and Technological Significance: The iron Warren pony truss overpass of riveted construction was built in 1890, according to plans drawn by the Lehigh Valley Railroad office of Superintendent of Bridges. It is technologically significant because it is an early and well-preserved example of its type and it has T sections for the diagonals (criterion C). T-shaped section is a ca. 1890 detail that is not common. The riveted Warren pony truss with outriggers to brace the upper chord and provide lateral stability was a common choice by railroads for grade crossing eliminations around the turn of the century, but few of the extant examples are documented as being as early as the Higginsville Road overpass. Additionally, the trusses appear unaltered, and the flooring system appears to be an inkind replacement of the original arrangement of timber stringers carried on brackets on the floor beams carrying a plank deck."

There is a bridge in this place today. It is still a one lane pony bridge but does not appear to be the one described above.

Facts 

Note: The following information comes from the National Bridge Inventory and has not been verified.
Overview
Pony truss bridge over Lehigh Line on Higginsville Road
Location
Hunterdon County, New Jersey
Status
Replaced by a new bridge
History
Built 1900; rehabilitated 1997
Railroads
- Conrail (CR)
- Lehigh Valley Railroad (LV)
- Norfolk Southern Railway (NS)
Design
Pony truss
Dimensions
Length of largest span: 49.9 ft.
Total length: 54.1 ft.
Deck width: 13.5 ft.
Approximate latitude, longitude
+40.51162, -74.78272   (decimal degrees)
40°30'42" N, 74°46'58" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/518408/4484566 (zone/easting/northing)
Quadrangle map:
Flemington
Average daily traffic (as of 2017)
158
Inventory numbers
NJ 1050167 (New Jersey bridge number)
BH 25261 (Bridgehunter.com ID)
Inspection report (as of October 2017)
Overall condition: Fair
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 69 (out of 100)
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