New NY Bridge (Tappan Zee Bridge Replacement)

Tectonic is providing inspection and testing services as a subconsultant to the design build team for the construction of the New NY Bridge, formerly known as the Tappan Zee Bridge. The existing bridge is an essential component of the regional roadway network connecting Rockland and Westchester counties and provides integral access to the New York Metropolitan Area.

The services Tectonic is providing are guided by the Quality Assurance and Quality Control program for the project, which was developed using ISO 9001 standards, 23 CFR Part 637 requirements and the project’s contract document. Tectonic is responsible for all components of special inspections and materials testing, including:

  • Pile driving inspection & monitoring
  • Steel inspection & non-destructive testing of steel components
  • Geotechnical inspection of earthwork, subgrades & backfill
  • CIP & precast concrete inspection & testing
  • Asphalt paving inspection & testing
  • Establishment of an on-site materials testing laboratory

The new NY Bridge is designed for a 100-year service life and will be mass-transit-ready. It will feature twin 3-mile structures, each with 1,200-foot cable-stayed main spans and 350-foot steel girder approach spans. The Bridge will provide 8 general traffic lanes, emergency lanes, extra-wide shoulders for express bus service, a dedicated bicycle and pedestrian path on the northern span, and scenic overlooks with anti-climb fencing and security cameras. A new toll plaza will include at least 3 highway-speed E-Z Pass lanes.