Mill Dam Bridge, Historical bridge in Centerport, New York.
The Mill Dam Bridge spans across Centerport Harbor tidal mudflat on Long Island's North Shore, connecting the harbor waters to Mill Pond through tidegates.
Sylvanus Townsend constructed the first bridge at this location in 1774, with the original mill and dam initially built in a southern position in 1674.
The adjacent Grist Mill Park features a historic millstone donated by the Centerport-Greenlawn Historical Society, preserving the industrial heritage of the area.
The current structure includes a prestressed concrete center span with modern tidegates, completed in 2005 after replacing the previous 1936 construction.
Workers discovered a 3000-pound gear from an 1848 mill renovation during repairs to the causeway in February 2008.
Location: New York
Official opening: 1774
GPS coordinates: 40.89280,-73.37300
Latest update: March 17, 2025 06:08
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