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Mantua Creek Bridge

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Mantua Creek Bridge

Awsome scenery

Photo taken by Douglas Butler in April 2013

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BH Photo #273485

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Description 

FROM NEW JERSEY DEPARTMENT OF TRANSPORTATION - BUREAU OF ENVIRONMENTAL SERVICES - NEW JERSEY HISTORIC BRIDGE DATA: "The two-lane bridge is a single-span movable Waddell-type vertical lift with two encased steel stringer approach spans. Its overall length is 167' with a 40' roadway. The main vertical lift span consists of a single thru girder with floor beams. The span is constructed to permit it being lifted vertically to a height of 64' clear above mean low water. At each end of the main span are steel towers approximately 96'-high. Each tower consists of two legs with horizontal and diagonal sway bracing. Between the tops of the opposite towers pass two trusses, and suspended between the trusses is the central overhead machinery house. The towers and bracing are all riveted angles, channels, and beams steel construction. Cantilevered off both sides of the main span are concrete deck sidewalks with sheet metal balustrades. The main span is operable and tended.

Power for lifting the bridge is supplied from the central overhead machinery house that contains an electric motor and a back-up gas engine. At the top of each of the four tower legs are sheaves over which pass steel-wire ropes. The ropes are attached at one end to counterweights and at the other to couplings attached to the roadway. Power is transmitted from the motor to the sheave coupling by means of direct drive line shafting and gears. The span moves up and down along a C-shaped guide on the interior of the tower legs. The machinery is equipped with brakes, clutch, and locks. The two counterweights consist of concrete blocks held within riveted steel plate frames on the exterior side of the tower legs.

The approach spans are concrete encased steel stringers with concrete balustrades and sidewalks. The bridge has a concrete substructure with cutwater piers. The fenders are timber piling. At each end of the main span are safety gates original to the bridge construction. Additional modern safety gates have been added at the abutment ends of the approach spans. Northeast of the northern approach span is a modern two-story operator's house."

Facts 

Overview
Vertical lift bridge over Mantua Creek on NJ 44 in Paulsboro
Location
Paulsboro, Gloucester County, New Jersey
Status
Open to traffic
History
Built 1935
Design
The vertical lift bridge has thru-girder deck, lattice-girder vertical towers with portal bracing and longitudinal lattice girders, wire-rope lift mechanism, reinforced-concrete counterweights in steel-plate frames, and operating machinery at the center of the span. The bridge is a distinguished and well-preserved example of a "Waddell-type" vertical lift, and is one of three such bridges built by the state in the county between 1935 and 1940.
Dimensions
Length of largest span: 85.0 ft.
Total length: 166.0 ft.
Deck width: 40.0 ft.
Vertical clearance above deck: 15.3 ft.
Recognition
Eligible for the National Register of Historic Places
Also called
NJ 44 OVER MANTUA CREEK
Approximate latitude, longitude
+39.83111, -75.23583   (decimal degrees)
39°49'52" N, 75°14'09" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/479819/4409039 (zone/easting/northing)
Quadrangle map:
Woodbury
Inventory numbers
NJ 0806151 (New Jersey bridge number)
BH 25207 (Bridgehunter.com ID)
Inspection (as of 12/2014)
Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 83.8 (out of 100)
Average daily traffic (as of 2015)
8,637

Update Log 

  • March 27, 2016: New photos from Barry Caselli
  • January 27, 2014: New photos from Douglas Butler
  • June 20, 2011: Updated by Jodi Christman: Added description

Sources 

  • Jodi Christman - masterofchaos [at] outlook [dot] com
  • NJDOT - Historic Bridge Survey
  • Douglas Butler