From our local beginnings over 130 years ago to our vast international presence today, WSP has enjoyed continuous growth and enrichment of its service offering. Every milestone reached has enabled us to better fulfill our purpose of preparing our communities and environment for the future.

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WSP Today

WSP is a globally-recognized professional services firm employing approximately 42,000 people.

We welcomed 2,500 experts from eight different acquisitions in 2016, adding to existing expertise in our Americas, EMEIA and Asia Pacific operating regions, as well as establishing our presence in three new countries: Chile, Peru and Mexico. The largest team to join us was Mouchel Consulting, a 2,000-employee engineering consulting firm operating mainly in the UK and Ireland, with a presence in the Middle East.

In 2016 Alexandre L’Heureux, our former Chief Financial Officer, transitioned to the role of President and Chief Executive Officer. Under his leadership, we made the important decision to bring together our different firms to unite under a single brand: WSP.

Always be the first choice for clients, partners and employees.
WSP 2015-2018  Strategic Plan vision
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Our History in the United States

WSP USA traces its origins back to 1885, when William Barclay Parsons founded the company that would become Parsons Brinckerhoff in New York City. Early projects included the design of the original New York City subway system and the Cape Cod Canal, as well as consulting for hydropower projects in New York State. The firm has worked on many of the major transit systems in the U.S., including San Francisco, Atlanta, Los Angeles, Salt Lake City and Seattle, and has designed countless highways, bridges and tunnels, in addition to consulting on energy, water/wastewater and community development projects.

Parsons Brinckerhoff was acquired in 2014 by WSP, a global professional services consultancy.

WSP first entered the US market in 2000 through the acquisitions of Cantor Seinuk, a structural engineering firm established in 1953, and of Flack + Kurtz, a mechanical, electrical and plumbing (MEP) engineering business founded in 1969. The two firms later comprised the buildings service line of the company. Environment & Energy, an environmental and energy consulting business established in 1986, became part of the company in 2006.

The following year, WSP acquired Chas H. Sells, Inc., a firm established in 1925. During its history, Chas H. Sells, Inc. worked on such iconic New York projects as Verrazano-Narrows Bridge, the Brooklyn Bridge, the George Washington Bridge, the Bronx-Whitestone Bridge and the Gowanus Expressway. The firm is also known for its expertise in the planning and design of large-scale developments, including residences and offices. After its acquisition in 2007, it became WSP's transport and infrastructure engineering group in the U.S., with a specialization in bridge design and engineering.

In 2014, following the acquisition of Parsons Brinckerhoff, WSP acquired ccrd, a Texas-based MEP engineering and commissioning firm with deep experience in building for the healthcare, science and technology markets. ccrd was the MEP engineer for the Dell Children's Medical Center of Central Texas in Austin, the world's first LEED® Platinum hospital.

WSP expanded its buildings services in the Midwest with the acquisition of Halvorson and Partners in 2015. The structural engineering firm, established in Chicago in 1996, provided structural designs for high-profile, award-winning projects in the U.S. and internationally, including the Burj Mohammed Bin Rashid Tower in Abu Dhabi, which won the 2015 Best Tall Building Award for the Middle East and Africa from the Council on Tall Buildings and Urban Habitats.

WSP acquired the water management division of Schlumberger, a specialist in the development, management and environmental protection of water resources, in 2016. Later that year, WSP also acquired substantially all the assets of CRC, a New York-based firm with expertise in central utility plants and cogeneration systems.

In 2017, WSP acquired Leggette, Brashears & Graham, a groundwater and environmental engineering services firm with seven decades of wide-ranging experience in hydrogeology, groundwater and surface water modeling, dewatering and depressurization, environmental investigation and remediation. We acquired YR&G, a sustainable design and consulting firm with offices in NYC, Chicago, Denver and Portland; this greatly expanded our sustainability services, adding consulting to our offering. The acquisition of Willoughby Engineers, an MEP firm with offices in Dallas and Chicago, expanded our MEP presence in Chicago and added additional market sector expertise to our Dallas office.

Today, WSP USA continues to enjoy growth and enrichment of its service offering. Every milestone reached has enabled us to better fulfill our purpose of preparing our communities and environment for the future.


Key Dates in Our History


WSP acquires Leggette, Brashears & Graham


WSP acquires Willoughby Engineers, an MEP firm with offices in Dallas and Chicago.


WSP acquires YR&G, a national firm specializing in sustainable consulting, education and analysis


WSP acquires New Zealand based OPUS and completes its 100th acquisition since the IPO. The acquisition enables WSP to enhance its activities in the Australia/New Zealand region and strengthen its expertise in the water-related infrastructure sector and asset management.


WSP acquires Concol, providing a leadership position in the Colombian market in a wide array of services and sectors, while solidifying the company’s presence in Chile, Peru and Mexico.


WSP acquires Poch, providing the company with a leadership position in the Chilean market, while also strengthening WSP’s presence in Colombia, Peru and Mexico.


WSP unites under one name, one brand and one vision across all geographies, cultures, specialties and backgrounds, anchored by its guiding principles and manifesto.


WSP acquires substantially all the assets of CRC, a New York-based firm with expertise in central utility plants and cogeneration systems


Alexandre L'Heureux is appointed President and CEO of WSP


WSP acquires Mouchel Consulting


WSP acquires MMM Group


WSP acquires leading Nordic project management firm Faveo Group, providing a strong entry-point in the Norwegian market, while strengthening the company’s position in Sweden.


WSP acquires Focus, a Canadian-based Engineering and Geomatics firm, expanding the company’s platform in oil & gas engineering services, and strengthening its presence in western Canada.


WSP acquires Parsons Brinckerhoff


WSP acquires ccrd, a mechanical/electrical/plumbing engineering firm based in Houston


GENIVAR and WSP reorganize as WSP Global Inc., and adopt WSP as the corporate brand


GENIVAR acquires WSP


Balfour Beatty acquires Parsons Brinckerhoff


WSP Acquires Chas H. Sells, Inc.


GENIVAR is listed on the Toronto Stock Exchange as an income fund


WSP Acquires Environment & Energy


WSP acquires Cantor Seinuk


WSP Acquires Flack + Kurtz


Three Montreal firms are acquired by Groupe-Conseil Solivar Inc., and the company’s name is changed to GENIVAR


G.B.G.M. Ltd and Les Consultants Dupuis, Côté Inc. merge to become Groupe-Conseil Solivar Inc., based in Quebec


William Sale Partnership Limited is established in Surrey, U.K.


Flack & Kurtz is founded in New York City.




Cantor Seinuk is established in New York City.


Chas H. Sells, Inc. founded in New York City


Parsons Brinckerhoff is founded in New York City