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New York State Thruway Authority

Welcome to the New York State Thruway Authority website for the Tappan Zee Bridge Deck Replacement

Tappan Zee Bridge at night

This September, the New York State Thruway Authority began replacing a significant portion of the deck of the Tappan Zee Bridge to improve service and ensure the safety of its customers.

This project is part of the Authority’s on-going commitment to continue to fulfill its responsibility to maintain and operate the bridge by continuing to make the necessary investments to assure safe and efficient travel for the thousands of motorists that cross the bridge daily.

This website is part of a public information program launched by the Authority to keep the public informed on the progress of the project, along with potential impacts of the deck replacement effort. Information about the project will also be broadcast to motorists via Dynamic Message Signs (DMS) along the highway and by Highway Advisory Radio, 530 AM in the Tappan Zee Bridge Corridor, as well as 1610 AM in the Newburgh area. Project updates, in addition to weekly construction information, will be sent regularly to the media. 

Images from 2007 deck replacement project; courtesy of New York State Thruway Authority

The Authority is implementing a number of strategies to minimize the impact of this project on travelers:

  • Deck replacement work will be conducted primarily during off-peak, overnight shifts generally from 8 p.m. until 6 a.m.
  • The Authority will limit the Contractor's day work, permitting single lane closures as needed.
  • Deck replacement materials will be manufactured off-site, reducing noise on-site and shortening the duration of the project overall.

In 2006, the Contractor, Perini/Tutor Saliba, JV, of Peekskill, New York, conducted extensive field measurements and surveys of the bridge, as required by the bid documents to ensure timely and efficient placement of the sections at night, and started fabrication of the components.

At the end of April 2007, the Authority hosted two public information meetings - one on Wednesday, April 25, at the Tarrytown Village Hall and another on Thursday, April 26 at the Palisades Mall Raso Community Room.

The Authority began physical construction on September 7, 2007.  Please visit this site regularly for the most up-to-date project information.