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For immediate release: September 20, 2013


The U.S. Coast Guard has issued a revised Notice to Mariners with updated safety information, including the establishment of a Regulated Navigation Area (RNA) 300 yards north and 200 yards south of the existing Tappan Zee Bridge. All boaters are required to use the main channel, reduce wake and use extreme caution while transiting the area.

If necessary, the Coast Guard in the future may temporarily prohibit all vessel traffic in the RNA for safety purposes.

The Coast Guard boating safety information can be found on the project website,, under the boating safety icon.

Tappan Zee Constructors, LLC will continue utility work on River Road in South Nyack. This work will continue through November and will involve reducing the roadway to one lane during daytime hours. During non-work hours, the road will have temporary coverings in place that may create uneven driving surfaces. Motorists and bicyclists should slow down and use extreme caution in the area.

Construction of the Rockland County trestle will continue and include daytime pile driving to install the temporary foundation piles needed to support the platform. Pile driving will be limited to the hours of 7 a.m. to 7 p.m. on weekdays and, occasionally, from 12 noon to 7 p.m. on Saturdays. The trestle is a work platform that will support a crane for the construction of the westernmost section of the new bridge. The 1200-foot long platform helps reduce the amount of dredging required.

Impact pile driving will continue as part of the ongoing test pile program and will continue through October at various locations for future pile foundations during the same timeframe as above. The test pile program will verify subsurface conditions and test structural load capacities in preparation for construction of the new bridge's permanent foundation.

On Monday, September 23, one southbound right hand lane and shoulder on I-87/I-287 between exit 11 and exit 9 will be closed from 10 a.m. to 3 p.m. for utility location testing. From Tuesday September 24 to Thursday, September 26, one northbound right hand lane and shoulder on I-87/I-287 between exit 9 and the Tappan Zee Bridge will be closed from 10 a.m. to 3 p.m. for utility location testing. One northbound right hand lane and shoulder will be closed in the same location on Friday, September 27 from 10 a.m. to 1 p.m. for utility location testing.

Ongoing operations:


Andrew M. Cuomo

New York State
Thruway Authority

Federal Highway

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