Hudson River Dredging Moves Forward (USA)

Hudson River Dredging Moves Forward

Tappan Zee Constructors, LLC (TZC) will continue 24-hour-a-day dredging operations in the Hudson River as part of the New NY Bridge Project.

The U.S. Coast Guard has issued a revised Notice to Mariners with updated safety information, including a request that boaters use the main channel, reduce wake and use extreme caution while transiting the area in the vicinity of the Tappan Zee Bridge.

Dredging will occur over a three-month period from August 1 through October 31 to avoid negatively impacting migration and spawning patterns of local sturgeon populations and other fish species.

Dredging crews will work 24-hours-a-day, seven-days-a-week starting from the main navigation channel end of the dredging footprint towards the shoreline on both the Rockland and Westchester County sides of the bridge. The operations will deepen the river’s shallow water level in the work zone by removing sediment from the river bottom. The dredged materials are being properly disposed of at offsite locations.

Impact pile driving will continue this week as part of the ongoing test pile program and will continue through October 31 at various locations for future pile foundations. This work will be performed from 7 a.m. to 7 p.m. on weekdays and, at times, on Saturdays from 12 noon to 7 p.m. The test pile program will verify subsurface conditions and test structural load capacities in preparation for construction of the new bridge’s permanent foundation.

Ongoing operations:

– Test pile program;

– Geotechnical land borings;

– Rockland bulkhead construction (including fence & gates) and Dock Extension at Rockland (under existing bridge);

– Temporary Westchester trestle construction including pile driving on weekdays from 7 a.m. to 7 p.m.;

– Survey inspections on existing bridge;

– Rockland and Westchester environmental monitor installations;

– Mobilization at the exit 10 staging area;

– Support for river-based work from the Rockland shoreline.

More info


Press Release, August 12, 2013