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route 72 manahawkin bay bridges project graphic


April 2015

(click on thumbnail photos to enlarge in bottom window)

This view is of the first bridge beam arriving at the project site. The beams are Prestressed Concrete beams fabricated at a concrete plant in Virginia. The beams are shipped by barge to a marina in Camden, New Jersey and then placed on the flatbed of a truck and driven to the project site. The limited water depth in the Manahawkin Bay made shipping the beams directly to the project site impossible.
This view is of the first bridge beam being lifted into place. The beams are 6' 7" tall and weigh more than 1,000 pounds per foot. With three different beam lengths (100, 125 and 150 feet), the weight of the beams range between 120,000 and 180,000 pounds. This beam is 125 feet long, weighing 150,000 pounds. Two cranes are used to safely share the load. The cranes are supported by the temporary trestle platform adjacent to the new bridge's alignment.
This view is of the first bridge beam being set on two adjacent pier caps. Extensions for reinforcement steel at the tops of the beams which provide a positive structural connection between the beams and the future concrete deck are visible as well as extensions of the prestressing steel strands at the ends of the beams which provide connection strength between bridge spans resulting in semi-continuous elements and result in a more economical design of the structure.

This view is of the first span of concrete beams that have been lifted into place at Span 16. Cable systems are installed on the tops of the beams and used in conjunction with harness restraints to allow workers safe access to the elevated surface provided by the structural framing.

In this view, work on setting the concrete beams of Span 15 (second span) is underway. Span 15 is comprised of 150 feet long beams weighing 180,000 pounds. The beams are shipped with an elastomeric bearing pad attached at each end. The bearings provide a strong, yet flexible surface for the beams to rest on so that the minor regular movements of a bridge can be accommodated without damaging the rigid concrete surfaces.
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  Last Updated:  May 12, 2015