Tappan Zee Bridge Replacement

GPI is providing independent quality assurance services for design and construction on this $3.14 billion bridge replacement project of the Tappan Zee Bridge over the Hudson River. More »

Transit Signal Priority System for Lower Manhattan

Study, design and deployment of a Transit System Priority (TSP) system on approximately two miles of multiple roadways, incorporating 34 intersections as part of the 1st and 2nd Avenue Bus Rapid Transit (BRT) project. More »

North Bank Pedestrian Bridge at Night in Boston, MA

As part of a joint venture team, GPI served as the lead firm overseeing the design and construction of the 2013 ACEC award winning North Bank Bridge and Park project. More »

New Boiler Installation for Public High School, Bronx, NY

GPI provided MEP design and construction administration for upgrades including new boilers, boiler auxiliary components, fuel delivery system capacities, heating distribution system components and controls and electrical requirements for public high school. More »

Bayonne Bridge Navigational Clearance Program

GPI is providing construction management services for the $743-million Bayonne Bridge Navigational Clearance Program (BBNCP). More »



Greenman-Pedersen, Inc. (GPI) is pleased to name Ralph Csogi, PE as the new President/CEO.

Ralph Csogi

Mr. Csogi has been with GPI for 30 years and is the key player in the growth of the construction and inspection division of the firm. “I am confident that Ralph’s winning executive management skills, his high level of expertise in engineering and construction management, along with his outstanding reputation in our industry will help keep the firm on track for continued growth and innovation” says Steve Greenman.  See the full Press Release

Project Awards

GPI Rockville is proud to be on three winning teams for the 2014 IIDA Premiere Awards.

2014 IIDA Premiere Award Winners

Nuclear Energy Institute

The IIDA Premiere Award honors and celebrates outstanding originality and excellence in Interior Design/ Interior Architecture projects internationally. The Rockville Maryland Branch was on the winning team for the Gold and Pinnacle Award for Nuclear Energy Institute along with a Bronze for Spectrum’s design and another Bronze Award for The Motley Fool’s design. See the full announcement.