The second phase of a major replacement project on the Route 52 causeway between Somers Point and Ocean City, New Jersey replaced two existing lift bridges at the ends of the causeway with fixed spans and improved the approach roads. Peirce Engineering was engaged to design 69 cofferdams on land and in open water with depths up to 40 feet to accommodate pile cap construction. Cofferdams ranged in size from 30’W x 30’L to 30’W x 90’L. In addition to the cofferdams, Peirce Engineering designed 3 steel sheet pile access bulkheads, cantilevered and tiedback with tie rods and steel sheet pile deadmen, which were used for construction access and for off loading material barges.

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