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New NY Bridge Milestone Reached


Closure of the Westbound Lane complete

March 25th saw the closure of the westbound cable-stayed bridge, with the successful installation of the last steel superstructure segment. COWI engineers worked with the contractor (Tappan Zee Constructors) to ensure the structure geometry allowed for the installation of the steel closure segment without issue.
The completion and closure of the cable-stayed main span marks a significant landmark in the US $3.98 billion dollar project.
"COWI is very proud to be the main span engineer of record on the New NY Bridge. The closing of the westbound bridge is an important point in the life of this project, as the new iconic bridge takes form across the Hudson," says Don Bergman, COWI North America's Senior Project Director & Vice President, Major Projects.
The completed westbound bridge is 2,230 feet in length with a main span of 1200 feet, and connects the counties of Westchester and Rockland. The closure will allow traffic on the existing Tappan Zee Bridge to be moved to the new westbound bridge, and demolition of the existing bridge to begin to make way for the new eastbound bridge. The bridge will fully open to traffic following the completion of the new eastbound bridge.

LAST UPDATED: 07.04.2017