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Old Mill Road Bridge

Hunterdon County, New Jersey

Photos 

The bridge is paved, the road is not.

Photo taken by Andrew Pearce in September 2012

Enlarge

BH Photo #239388

Map 

Description 

from the 2002 survey: "The skewed 3-panel Pratt half hip pony truss bridge is pin-connected with cast iron connectors. The west abutment is stone encased in concrete. The east abutment and wingwalls were rebuilt in concrete in 1955. The bottom chord is stamped eye bars with shop numbers. Many welded alterations, including plates on the top chord and the cast connections, additional diagonals, and outriggers."

2012 note2: east abutment also has a 5 foot diameter bypass tunnel in it. Skew angle is minor. Truss parts are numbered with marker pen; should we be concerned? Bridge parts appear to be in good, low rust condition.

Facts 

Overview
Pony truss bridge over Wickecheoke Creek on Old Mill Road
Location
Hunterdon County, New Jersey
Status
Open to traffic
History
Built 1899, altered 1955
Builder
- Wrought Iron Bridge Co. of Canton, Ohio
Design
Half-hip Pratt pony truss
Dimensions
Length of largest span: 46.9 ft.
Total length: 48.9 ft.
Deck width: 10.8 ft.
Skew angle
15 degrees
Approximate latitude, longitude
+40.46444, -74.97639   (decimal degrees)
40°27'52" N, 74°58'35" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/502001/4479308 (zone/easting/northing)
Quadrangle map:
Stockton
Average daily traffic (as of 2015)
110
Inventory numbers
NJ 100D488 (New Jersey bridge number)
BH 25291 (Bridgehunter.com ID)
Inspection report (as of May 2015)
Overall condition: Fair
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 42.3 (out of 100)
View more at BridgeReports.com

Categories 

19th Century (6,447)
Built 1889 (195)
Built during 1880s (1,710)
Corrugated deck (489)
Functionally obsolete (7,747)
Half-hip Pratt pony truss (405)
Hunterdon County, New Jersey (150)
New Jersey (1,235)
One-lane traffic (7,513)
Open (37,447)
Owned by county (19,086)
 Pin-connected (3,552)
Pony truss (15,230)
Pratt pony truss (3,238)
Pratt truss (8,206)
Skewed (4,789)
Span length 25-50 feet (14,202)
Total length 25-50 feet (10,216)
Truss (29,964)
Wrought Iron (372)
Wrought Iron Bridge Co. (293)

Update Log 

  • May 30, 2017: Updated by Christopher Finigan: Added categories "Pin-connected", "Wrought Iron"
  • March 15, 2016: Updated by Art Suckewer: Corrected build year based on reference in the Strimples Mill Bridge Historic Register submission draft.
  • September 15, 2012: Updated by Andrew Pearce: added data and pictures

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