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About Us
TECTONIC Engineering & Surveying Consultants P.C. (TECTONIC) is a multi-disciplined engineering firm established in 1986 employing a staff of over 500 professionals comprised of civil, structural, environmental, geotechnical engineers, geologists, scientists, surveyors, planners, and construction inspectors. The depth of experience combined with the multi-faceted capabilities of our staff presents a company that is highly qualified to accomplish projects from inception to completion. Our approach to the management and administration of these projects is grounded in basic practiced strategies, which have proven to deliver successful products time and again. TECTONIC has been in business for over 30 years with a reputation for offering professional quality services to its clients, earning our ranking in the top 200 firms of the Top 500 ENR engineering design firms since 2001.


GSA Contract Holder


Zweig Letter 2012! (Ranked #9)

Tectonic Ranks #162 on Engineering News Record's (ENR's) 2015 Top 500 Design Firms.
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Tectonic Engineering & Surveying Consultants P.C. Welcomes Mrs. Andrea Gievers as Senior Environmental Management Analyst For Environmental Review Projects.
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TECTONIC participates in interview for the 2015 Executive Review Issue of the EBJ regarding their role in New York-area storm recovery initiatives.
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TECTONIC Engineering & Surveying Consultants P.C. ranks #31 on Trenchless Technology�s 2014 top 50 design firms list
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New Tappan Zee Hudson River Bridge Crossing
Tappan Zee Quality Assurance & Quality Control Inspection & Testing Services Rockland and Westchester Counties, NY - Tectonic Engineering & Surveying Consultants is providing Quality Control (QC) services for the construction of the new Tappan Zee Hudson River Bridge as sub-consultant to Tappan Zee Constructors, LLC - (TZC), the team of Principal Participants Fluor Enterprises, Inc., American Bridge Company, Granite Construction Northeast, Inc. and Traylor Bros., Inc. As an integral part of the TZC team, Tectonic is responsible for all components of special inspections and materials testing, Including:

  1. Pile Driving Inspection & Monitoring
  2. Steel Inspection and Non-Destructive Testing of Steel Components
  3. Geotechnical Inspection of Earthwork, Subgrades & Backfill
  4. CIP & Precast Concrete Inspection & Testing
  5. Asphalt Paving Inspection & Testing
  6. Establishment of an On-Site Materials Testing Laboratory

The Quality Assurance program is developed using ISO 9001 standards. The Quality Control program follows the requirements of the 23 CFR Part 637 and the contract documents. The Quality Control program was created to meet the guidelines and requirements established by the presiding agencies.

The existing bridge is an essential component of the regional roadway network connecting Rockland County with Westchester County and providing integral access to the New York Metropolitan Area. The new Tappan Zee Hudson River Crossing is designed for a 100-year service life and will be mass-transit-ready. It features twin three-mile structures, each with 1,200-foot cable-stayed main spans and 350-foot steel girder approach spans. The new bridge provides eight 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 three highway-speed E-Z Pass lanes. The project also includes plans for the approximately 35 existing buildings associated with the bridge. The design-build approach produced a savings of $1.7 billion compared with original state and federal cost estimates, and is scheduled for completion in 2018.
Westchester County Association American Wind Energy Association (AWEA) Orange County Partnertship National Society of Professional Engineers (NSPE) The National Rural Electric Cooperative Association (NRECA) American Water Works Association (AWWA) Westchester Municipal Planning Federation (WMPF) Sullivan County Partnership for Economic Development PICS Auditing The Wireless Infrastructure Association (PCIA) New York State Builders Association (NYSBA) Independent Oil and Gas Association of New York (IOGANY) New Jersey Association of Counties (NJAC) Orange County Chamber of Commerce (OCCC) Commerce and Industry Association of New Jersey (CIANJ)
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