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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 Project Progress

In September 2007, 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.  By the end of 2007, the Authority had completed the installation of new deck panels from span 1 to 21 in both directions.  After a three-month winter shutdown, deck replacement work resumed on March 3, 2008.  Since that time, 780 panels have been installed between spans 22 and 178 in both the northbound and southbound direction.  In total, since September 2007, 864 of the 1092 planned new deck panels have been installed, including 256 of 288 on the main span of the bridge and 608 of 664 on the western causeway.  For the remainder of 2008, work will continue on the western causeway in the southbound direction, on the west deck truss spans, and on the main span in both directions.
This project is part of the Authority’s on-going commitment 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 about the progress of the project, along with potential impacts of the deck replacement effort. The Authority will be updating this site frequently to keep the public informed about the progress of this project.  Please visit this site regularly for the most up-to-date project information.
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. 

The Authority has implemented 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.