Who We Are

A man shaking hands with a woman at a job fair - N Shortt

Our Experts continue to deliver innovative, sustainable solutions for a wide array of projects

More than 15 years ago, GPI’s leaders came together and developed seven strategic objectives that define how we run our business. These objectives shape our culture and contribute to the overall success of the organization. GPI’s philosophy is centered on what makes this company unique: our people. Our dedicated employees serve clients and one another as design professionals, technical specialists, administrators, and support staff, motivated by a desire to succeed.

The foundation of GPI’s success begins with empowering our people to do their best work and supporting them as they reach beyond their goals. That success is strengthened through teamwork, with each team member contributing their unique talents toward a common goal: delivering a quality product.

The pride and fulfillment that come from working together to achieve professional and personal goals reinforce our commitment to one another, to our clients, and to excellence.

GPI’s people make the difference. Our values of teamwork, quality, and commitment set us apart and remain fundamental to our growth and continued success.

View Our Leadership

Our Mission

Together, we create the infrastructure people need most.

EXPLORE our History of Excellence

Beecher Greenman, Bert Pedersen, and Don Thurber open the doors of A. Beecher Greenman & Associates in the Village of Babylon.

1966

Humble Beginnings

Beecher Greenman, Bert Pedersen, and Don Thurber open the doors of A. Beecher Greenman & Associates in the Village of Babylon.

The Suffolk County Department of Public Works awards the Lake Avenue widening project to A. Beecher Greenman & Associates.

1967

The First Assignment

The Suffolk County Department of Public Works awards the Lake Avenue widening project to A. Beecher Greenman & Associates.

NYSDOT awards the firm the Wolf Road Design project: a two mile, four-lane, urban boulevard in a rapidly developing area of Albany.

1967

The First Major NYSDOT Project

The New York State Department of Transportation awards the firm the Wolf Road Design project: a 2-mile, four-lane, urban boulevard in a rapidly developing area of Albany, NY.

Greenman Pedersen & Associates (GPA) was formed and moved to new and expanded quarters at 100 West Main Street in Babylon.

1968

A New Name and a New HQ

Greenman Pedersen & Associates forms and moves to new and expanded quarters at 100 West Main Street in Babylon.

Within five years, staff grows to 20 and the firm is working for most major towns on Long Island, as well as Suffolk and Nassau County Departments of Public Works.

1971

Staff Size Grows to 20

Within five years, Greenman Pedersen & Associates employs 20, and the firm is working for most major towns on Long Island as well as for the public works departments of Suffolk and Nassau counties.

Who We Are: An aerial view showcasing the breathtaking expanse of a large body of water

1972

GPI Secures First Federal Project

A US Army Corps of Engineers hurricane study along 80 miles of the south shore of Long Island is awarded to Greenman-Pedersen & Associates.

1973

GPI Branches Out

Annapolis becomes the first branch office following the award of two bridge rehabilitation projects from the Maryland State Highway Administration.

1975

The First Acquisition

Albany, NY becomes the firm’s second branch office after acquiring the traffic engineering firm Wallace and Champagne.

After 10 years in business, Greenman Pedersen & Associates ranks #377 on Engineering News Record’s list of top design firms.

1976

GPI Debuts on ENR’s Top 500 Design Firms

After 10 years in business, Greenman Pedersen & Associates ranks #377 on Engineering News-Record’s list of top design firms.

1979

Northern Momentum

The firm expands into New England by opening an office in Worcester, MA.

1980

A New Vision

Greenman Pedersen & Associates becomes Greenman-Pedersen, Inc.

The design of four New York City bridges over rail facilities becomes GPI’s first New York City Department of Transportation project.

1980

First NYCDOT Project

The design of four New York City bridges over rail facilities becomes GPI’s first New York City Department of Transportation project.

GPI acquires Aerial Cartographics of America (ACA) and enters the field of aerial photography and photogrammetric mapping.

1982

GPI Expands into Aerial Photography

GPI acquires Aerial Cartographics of America (ACA) and enters the field of aerial photography and photogrammetric mapping.

With wins of the Manhattan Bridge Construction Engineering Inspection (CEI), the Marcy-Utica-Deerfield Arterial Design, and the Niagara Section of the New York State Thruway, our staff numbers expand quickly.

1982

Major Expansion

With wins of the Manhattan Bridge Construction Engineering Inspection (CEI), the Marcy-Utica-Deerfield Arterial Design, and the Niagara Section of the New York State Thruway, our staff numbers expand quickly.

Florida Department of Transportation awards GPI the State Route 60 Widening project.

1984

GPI Moves South

Florida Department of Transportation awards GPI the State Route 60 Widening project.

New York State Department of Transportation awards GPI the rehabilitation design of the Brooklyn-Queens Expressway/Gowanus Highway Merge.

1985

Major Rehabilitation Design Project

New York State Department of Transportation awards GPI the rehabilitation design of the Brooklyn-Queens Expressway/Gowanus Highway Merge.

Having outgrown its office, GPI moved its headquarters to the former New York State Department of Public Works Building in Babylon, where both Beecher’s and Bert’s fathers spent much of their professional careers.

1986

A New Home

Having outgrown its office, GPI moved its headquarters to the former New York State Department of Public Works Building in Babylon, where both Beecher’s and Bert’s fathers spent much of their professional careers.

GPI is awarded the New York Taconic State Parkway project, our first involving CAD and Digital Terrain Modeling

1987

First Major Reconstruction Design Project

GPI is awarded the New York Taconic State Parkway project, our first involving computer-aided design and digital terrain modeling.

Anne Arundel County Department of Public Works awards the Arundel Baseball Complex Project

1989

First Design/Build Project

Maryland’s Anne Arundel County Department of Public Works awards GPI the Arundel Baseball Complex project, our first using a design-build delivery method.

First suspension bridge main cable anchorage rehabilitation project on the Manhattan Bridge

1989

First Main Cable Rehabilitation Project

GPI was awarded and successfully completed its first suspension bridge main cable anchorage rehabilitation project on the Manhattan Bridge.

1990

Acquisitions Spark Quick Growth

Throughout the 1990s, GPI rapidly grows beginning with the acquisitions of S.G. Pinney & Associates, Underwater Engineering Services, Instrument Sales, Inc., and Keller and Kirkpatrick, Inc. in 1997. Then in 1999, GPI continues to expand service offerings and geographic reach through the acquisitions of SME Consulting and Highway & Traffic Signal Design, Inc.

Central Artery North Area Interface Project in Boston, MA

1990

The Big Dig

GPI awarded the Central Artery North Area Interface (CANA) Project in Boston, MA.

1991

Niagara Viaduct Rehabilitation

GPI performed an overall in-depth inspection and prepared contract plans for the design of the I-190 Niagara Viaduct in downtown Buffalo.

Steve Greenman succeeds Beecher Greenman as President / CEO

1994

The Next Generation

Steve Greenman succeeds Beecher Greenman as President/CEO.

1995

First Asset Management Project

New Jersey Department of Transportation awards GPI the NJ Outdoor Advertising Sign Management System project.

2000

A New Millennium

Throughout the 2000s, GPI continues to grow through acquisitions. Stowe Engineering and Atometrics Engineering help GPI continue to expand services beginning in 2001. Hillier Engineering & Technologies, Inc. is acquired the following year. In 2006, GPI acquires Corrosion Control Consultants and Laboratory (CCC&L), Varnum Associates, Berryman & Henigar, and Beardslee Engineering Associates.

2000

First LEED Platinum Rating

The Annapolis Junction office provides planning and design for site work for the Chesapeake Bay Foundation’s Philip Merrill Environmental Center, which received the first ever LEED Platinum rating through the U.S. Green Building Council’s LEED (Leadership in Energy and Environmental Design) rating system. It is recognized as one the “greenest” buildings ever constructed.

2001

First ITS Project

GPI wins its first ITS (Intelligent Transportation Systems) project, at Kennedy Airport for the Port Authority of NY and NJ. This project allowed airport operations personnel to monitor and manage landside traffic conditions and provide valuable travel information to airport customers en route.

2006

GPI becomes 100% Employee-Owned

The Employee Stock Ownership Plan (ESOP) acquires 100% of the company, sharing the company’s success with all employees.

NYCDOT awards GPI program management and inspection of Belt Parkway Project

2006

Largest Contract Win to Date

The New York City Department of Transportation awards GPI the program management and inspection of the $450 million Belt Parkway project.

Lebanon, NJ office wins contract with the New Jersey Turnpike Authority

2009

A Major Project with NJ Turnpike Authority

GPI’s Lebanon, NJ, office wins a major contract with the New Jersey Turnpike Authority to provide construction management services for the Interchange 6 to 9 Widening Program. The program is the Authority’s most significant construction project in its 58-year history and is estimated at $3 billion. In a joint venture with AECOM and PB Americas, the team’s $164 million contract involves construction management, scheduling, change order management, cost control, resident engineering, inspection, and material testing services.

2010

Acquisitions Continue

The 2010s continue the trend. Abate Associates in New York and Civil Tech in Florida are both acquired in 2012. In 2013, Nolan & Associates in Maryland is acquired. 2015 sees GPI acquiring Excel Engineering and the Vermont-based ORW Landscape Architects & Planners. In 2015, GPI expands its water/wastewater engineering services through the acquisition of Pennsylvania-based Hill Engineering.

2011

Beecher Greenman Passes Away

The success of the GPI organization today is the embodiment of Beecher’s unique vision and forward-looking management style.

GPI provides QA services for the Tappan Zee Bridge Replacement through a design-build contract. This project is the single largest bridge construction project in New York’s history, with a construction cost of $3.98 billion. When completed, the new bridge will be one of the widest cable-stayed bridges in the world, with a combined width across both decks of 183 feet.

2012

The New NY Bridge

GPI provides QA services for the Tappan Zee Bridge replacement through a design-build contract. This project is the single largest bridge construction project in New York’s history, with a construction cost of $3.98 billion. When completed, the new bridge is one of the widest cable-stayed bridges in the world, with a combined width across both decks of 183 feet.

GPI is awarded the construction management contract for the $743-million Bayonne Bridge Navigational Clearance Program for the Port Authority. This extraordinarily complex, once-in-a-lifetime project will raise the roadway 65-feet to accommodate new, larger shipping vessels to enter the busy New York/New Jersey ports.

2012

The Bayonne Bridge

GPI is awarded the construction management contract for the $743 million Bayonne Bridge Navigational Clearance Program for the Port Authority. This extraordinarily complex, once-in-a-lifetime project will raise the roadway 65 feet to allow new, larger shipping vessels to enter the busy New York/New Jersey ports.

Boston's North Bank Bridge selected for a ACEC national award.

2013

National Recognition

Boston’s North Bank Bridge project is selected for a American Council of Engineering Companies national award.

2016

GPI Celebrates the Big 5-O

After 50 years in business, GPI’s success is a testament to the vision of the founders. To commemorate this milestone, we decided to share our good fortune with our communities by performing more than 50 acts of charity throughout the year.

2017

New Partnership

GPI renews its commitment to supporting women in STEM by becoming a partner of WTS International, an organization dedicated to building the future of transportation through the global advancement of women.

2020

Onward & Upward

GPI continues to grow from a second-floor start-up to a multibranch firm with more than 1,500 employees and revenues over $200 million. Although the size of the firm has changed, our core values have not. We remain a team of dedicated employees who are committed to providing quality services at the best value to meet the needs of our clients.

2020

Embracing Diversity

GPI launches a Diversity, Inclusion, and Belonging program. We are committed to being a company that creates and reinforces a sense of belonging for all our employees and recognizes diversity and inclusion as necessary for the sustainability of our practice.

GPI wins the hunts point interstate access improvement design-build project

2020

Largest Engineering Design Contract to Date

GPI wins the Hunts Point Interstate Access Improvement design-build project, Contract 2 for New York State Department of Transportation, as the lead designer for the El Sol/DeFoe joint venture. An extremely complex project, GPI’s Babylon, Lebanon, and Albany offices collaborated to help win this high-profile, half-billion-dollar contract.

Man in suit at desk writing - Bert Pedersen

2021

Bert Pedersen Passes Away

Herbert M. Pedersen passes away on April 23. Bert, along with Beecher Greenman, formed GPI in 1966 in Babylon, NY. He continued to be a presence at GPI for many years.

2021

Denise Carter, PE, Promoted to Chief Strategy Officer

Denise previously led the Metro New York offices (Babylon & Manhattan) as branch manager. In her new role, Denise will lead and implement business strategy across the entire GPI organization, integrating business operations and services to optimize staff and organizational development.

GPI employee in an office space - Patrick Kenneally

2023

Patrick Kenneally, PE, Announced as New Chief Executive Officer

After almost 30 years with GPI, holding several leadership positions within the organization, including his most recent role as Northeast Regional Officer, Pat was announced as CEO in 2023. With his extensive professional experience, long tenure, and commitment to GPI’s seven strategic objectives, he brings a strong technical and managerial skillset to this new position.

2024

The GPI Journey

For more than 50 years, GPI has thrived because of its commitment to doing quality work. From the corporate headquarters in New York to the more than 60 offices throughout the United States, our employees take special pride in contributing to the success of our projects.

2025

Robert L. Hough

2025

Robert L. Hough Named Chief Financial Officer

Long-serving Chief Financial Officer Michael J. Buoncore retires from GPI and is named Chairman of the Board of Directors. Robert (Bob) Hough is appointed as the new Chief Financial Officer. Bob brings 28 years of extensive financial and leadership experience at GPI. He began his career with GPI in 1996 with the Babylon administrative team before transitioning to Corporate Accounting and then as Corporate Controller in 2007.

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Steve Greenman,
Board of Directors

As an employee-owned company, every employee is a stakeholder with a vested interest in its success. This incentive facilitates a fully collaborative approach to delivering services leading to successful projects and satisfied clients

Employee-Owned

GPI has been an employee-owned company since 2002

GPI’s Employee Stock Ownership Plan (ESOP) is a 100% employer-sponsored retirement benefit, allowing employees to earn ownership stock with zero out-of-pocket contribution required. Like a 401(k), but without the need for employee contributions or management, the ESOP grows over time, aligning our employees’ interests with the Company’s success and providing accrued financial rewards based on their length of employment.

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Ranked for engineering excellence

GPI has been consistently ranked in Engineering News-Record’s Top Design Firms. With a staff of over 1900 professionals, including engineers, planners, scientists, technicians, draftspersons, and inspectors, GPI provides expert services in a wide range of disciplines.

#83

ENR Top 500 Design Firms

#10

Bridges
ENR Top 500 Sourcebook

#25

TRANSPORTATION
ENR Top 500 Sourcebook

List of strategic objectives includes employee satisfaction, a quality product, client satisfaction, financial strength, managed risk, goals-oriented management, and continued growth

GPI’s Seven Strategic Objectives

At GPI, we are committed to achieving excellence through our seven strategic objectives, each designed to propel us toward long-term success and sustainability. These objectives form the cornerstone of our company’s philosophy.

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