At GPI, we pave the way to sustainable and innovative engineering design and construction solutions, one project at a time.

For more than 50 years, GPI's experts have delivered innovative, sustainable solutions for a wide array of engineering projects.

GPI recently completed Phase II, involving the construction of a new biotower pump station, clarifier pump station, two 130-foot diameter secondary clarifiers, a UV disinfection system, and related electrical work.

GPI is a subconsultant providing personnel, in conjunction with NYSDOT staff, to operate the electronic traffic information and management systems covering over 340 center line miles of roadway (limited access and arterial).

With more than sixty locations across twenty-two states, we have offices up and down the East coast to help coordinate your next engineering project.

GPI is responsible for engineering design and the foundational technical concept, as well as developing design-build procurement documents for replacing various structures along I-90. A key focus is the structure carrying I-90 over I-95 and the Charles River.

Well-designed and adequately commissioned building infrastructure provides a lifetime of energy efficiency, flexibility, and healthy spaces for building occupants. Many public and private clients in various industries turn to GPI for mechanical, electrical, plumbing, fire protection, structural, and civil engineering services.

Underwater Engineering Services, Inc. (UESI) – a GPI subsidiary – is a leading worldwide specialty engineering, commercial diving, and civil marine contractor.

GPI’s team of technical experts brings a combination of expertise, dedication, creativity, and fun to every project. Our commitment to building strong client relationships and delivering innovative …

The initiative, known as “Green Route 347,” has been recognized with NYSDOT GreenLITES Engineering Evergreen environmental sustainability awards. GPI played a key role in the design of the comprehensive roadway reconstruction and widening project for NY 347, NY 111, NY 25, and 12 side streets.