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route 72 manahawkin bay bridges project graphic


May 2017

(click on thumbnail photos to enlarge in bottom window)
This photo is taken on the northeast side of the bay bridges and demonstrates the temporary trestle built to date on the east side of the crossing as well as the demolition of the closed bridge. The temporary trestle is a construction platform that is designed to carry the large cranes as they lift demolished sections of the bridge, and will also be used for future loads such as the new steel girders. Temporary trestles will be built at each end of the bridge and extend as needed wherever there is not enough water depth to effectively use barges. The designated navigation channel will not be impacted by either trestle.

This pictures shows the progress of the demolition in the eastern most span of the closed bridge (designated as Span 17 of a total of 17 spans for the bridge). The contractor has to carefully select the demolition procedures and locations of cuts for the steel girders to maintain a safe work zone. The end span of the newly constructed future EB bridge can be seen in the background.

This view is from just east of the Manahawkin Bay crossing and shows the progress of the closed bridge’s demolition at the easterly span and the east abutment. The superstructure in this span is completely removed, other than short overhanging sections of the steel girders. In spans further to the west, the deck and floorbeams have been completely removed. Soil has been excavated at the abutment and the abutment wall demolition is nearly complete. The walls experienced some degradation over time, but the footings and piles below remain in good condition and will remain in service after the rehabilitation is complete.

This photo is taken near the center of the bridge looking eastward and demonstrates the extent of the demolition achieved to date. So far, the deck removal has occurred for an approximate length of 1,200 feet and over 12 million pounds of concrete has been removed. After removal from the project site, the demolished concrete is taken to a disposal/recycling site. In this photo, 5 transverse floorbeams have yet to be removed, while all floorbeams further to the east have already been removed.

This photo is taken at the northwest corner of the closed bridge, looking east. Here, the contractor is preparing to drive pile foundations from an anchored barge to support the temporary trestle structure that will be built at the west end of the bridge. The crane is preparing to pick up the driving leads and hammer located on an adjacent barge in order to drive the three pipe piles extending from the water.

This picture shows the temporary construction road at the west end of the Manahawkin Bay. The road is wide enough for the construction equipment and is maintained regularly by the contractor. This ramp provides access to the west end of the Manahawkin Bay Bridges and the east end of the Hilliards Thorofare Bridge.
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  Department of Transportation
  P.O. Box 600
  Trenton, NJ 08625-0600
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  Last Updated:  May 16, 2017