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West 79th Street Boat Basin A-Dock Reconstruction

New York City<br style='line-height:2px'>New York City Department of Parks and Recreation

HAKS provided design and construction support services to the New York City Department of Parks and Recreation for the rehabilitation of a marine dock at the 79th Street Boat Basin in Manhattan. Established in 1937 by Robert Moses as the "Recreational Boating Gateway to New York City," the boat basin serves as a popular home to recreational boaters. It includes two fixed and three floating piers with 116 slips and 80 moorings. The project focused on the reconstruction of "A" Dock, which includes a floating kayak launch and a 400-foot-long promenade.

Due to the growth of marine borers, the timber piling supporting the dock was in a state of decay and needed to be replaced. Work also included post-Sandy repairs and strengthening of the bulkheads/piers and replacement of the cap beams and decking to increase resiliency to flooding and hurricane damage. The project involved a detailed investigation, including topographic and bathymetric surveys, marine borings, and geotechnical and structural investigations.

The design involved preparation of contract documents for the installation of the new marine piles, dock renovation, staging of construction and utility reconnections, and agency approvals and associated permitting, a key challenge.