Our story

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.

WSP Today

WSP is a globally-recognized professional services firm employing approximately 49,000 people.

WSP is one of the world's leading professional services firms. WSP provides technical expertise and strategic advice to clients in the Transportation & Infrastructure, Property & Buildings, Environment, Industry, Resources (including Mining and Oil & Gas) and Energy sectors, as well as offering project and program delivery and advisory services. Its experts include engineers, advisors, technicians, scientists, architects, planners, surveyors and environmental specialists, as well as other design, program and construction management professionals.

Dedicated to serving local communities, we are engineers, planners, technical experts, strategic advisors and construction management professionals. WSP USA designs lasting solutions in the buildings, transportation, energy, water and environment markets. With more than 9,500 employees in 150 offices across the U.S., we partner with our clients to help communities prosper.


Always be the first choice for clients, partners and employees.
WSP 2015-2018  Strategic Plan vision

Our History in Canada

In Canada, two engineering services firms, G.B.G.M. Ltd and Les Consultants Dupuis Côté, Inc. began operating in Quebec City in 1959. The two firms merged in 1987 to become Groupe-Conseil Solivar Inc., which acquired two more companies at the beginning of the 1990s, thus establishing its multidisciplinary approach. In 1993, geographic expansion began with the acquisition of three firms in Montreal and the company name changed to GENIVAR. Between 1993 and 2006 GENIVAR acquired at least 30 firms, establishing operations all across the province of Quebec. The company also entered the Ontario market. Between 2006 and 2012, over 60 firms were added and GENIVAR became one of the largest professional services firms in Canada, with offices in all provinces.

In 2012 GENIVAR acquired WSP Group PLC, a multidisciplinary consultancy based in London, UK, creating a professional services firm with 15,000 employees working in 300 offices worldwide. In January 2014, the company reorganized as WSP Global Inc. and adopted WSP as its brand. In the first quarter of 2014, Focus Group Holding Inc. joined the Corporation, strengthening the Corporation’s presence in the province of Alberta.

In 2015, we announced the acquisition of MMM Group, one of the largest privately-owned engineering consulting firms in Canada, as well as the acquisitions of Levelton and SPL Consultants.

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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.

With the addition of Louis Berger in 2018, WSP now has approximately 48,000 talented people globally, and is uniquely positioned to deliver successful and sustainable projects, to wherever its clients need are.

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.


History in Europe, Middle East, India and Africa (EMEIA)

Parsons Brinckerhoff in the UK traces its roots back over 125 years through three consulting engineering practices: MRM Partnership, Kennedy & Donkin and Merz and McLellan.

MRM Partnership, a multidisciplinary consultancy first established in 1887, was acquired by WMX Technologies Inc. in the US in 1993, and in 1994 became Rust Consulting Limited. Kennedy & Donkin, originally focused on power generation and distribution projects, was founded in 1889. In 1994, Kennedy & Donkin was also sold to WMX Technologies Inc. and became Rust, Kennedy & Donkin.

In 1995, Parsons Brinckerhoff acquired Merz and McLellan, another century-old power engineering consultancy, based in Newcastle, UK. In 1997, Rust, Kennedy & Donkin and Rust Consulting integrated their expertise, and the company was purchased by Parsons Brinckerhoff in 1998.  

The Williams Sale Partnership Limited was established in 1969 as a building services consultancy in the UK. The company was floated on the London Stock Exchange in 1987 as WSP. Between 1990 and 1995, UK-based acquisitions added structural and civil engineering capability to WSP’s skills portfolio. From 1996 to 1999, acquisitions were completed in the UK and South Africa, and then in 2001 WSP acquired Jacobson & Widmark in Sweden and two smaller Finnish consultancies. In 2003, further acquisitions in Finland increased our presence in the Nordics.

Parsons Brinckerhoff has been active in the Middle East since the 1940s. From 2005 to 2006, WSP gained a meaningful presence in the Middle East with two acquisitions in the region. In 2007, further acquisitions in Germany and the Middle East reinforced WSP’s profile as a global consultant. In 2014, the acquisition of Technip TPS, specialising in building and infrastructure engineering, enhanced our presence in the French market. In 2015, Faveo Group was acquired in Scandinavia. In 2016, further acquisitions were made in Sweden, Norway, Finland and the United Kingdom. In 2018, Kontigo and UnionConsult (based in Sweden and Norway) joined WSP. In 2019, we acquired Orbicon, a Denmark-based environmental consulting firm with a strong presence in the Nordics. We also acquired Lievense, a Netherlands-based multidisciplinary consulting firm, which enabled us to establish a footprint in the Dutch market.

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History in Asia-Pacific (APAC)

In 1970, Parsons Brinckerhoff established offices in Sydney, Brisbane and Melbourne and in 1978, Parsons Brinckerhoff’s Hong Kong office was the first location established in Asia. However, prior to 1978 Parsons Brinckerhoff provided an alternative design for the first Cross Harbor Tunnel project in Hong Kong, which was adopted and the tunnel opened in 1972. During the 1970s and 1980s Parsons Brinckerhoff’s experts were instrumental in the development of the mass transit systems in Hong Kong, Singapore and later Taipei.

In 1995, overseas expansion of WSP began with the formation of WSP Asia and in 2000, WSP increased its presence in Asia. In 2007, WSP completed a further acquisition in Australia. In 2014, the acquisition of WINWARD Group, a specialist structural engineering consultancy, strengthened WSP’s presence in Australia prior to the Parsons Brinckerhoff transaction. The acquisition of New Zealand’s Opus in 2017 enabled WSP to enhance its activities in the region and gain expertise in the water-related infrastructure sector and asset management. In 2018, WSP acquired Irwinconsult, once again strengthening its presence in Australia, particularly in the Property & Buildings sector.

Key Dates in Our History


WSP continues to strengthen our expertise in the Environment sector with the acquisition of LT Environmental.


WSP acquires US-based environmental consulting firm Ecology & Environment, expanding our geographic presence in the United States.


WSP acquires Lievense, a Netherlands-based multidisciplinary consulting firm, which enabled us to establish a footprint in the Dutch market.


WSP acquires Orbicon, a Danish environmental consulting firm, which will bolster our presence in the Nordics and strengthen our Strategic Advisory Services offering in environment.


WSP announced our intent to acquire Ecology and Environment Inc., US-headquartered environmental consulting firm that provides professional services to governments and private customers worldwide.


WSP is ranked 1st once again in the Transportation sector in Engineering News-Record’s annual list of Top 225 International Design Firms.


WSP unveils its 2019-2021 Global Strategic Plan, aimed at building the premier professional consultancy in its industry by the end of 2021.


WSP is 1st in the transportation sector among the “Top 225 International Design Firms” in Engineering News-Record.


WSP acquires Louis Berger, a US-headquartered leading international professional services firm with approximately 5,000 employees.


WSP acquires Leggette, Brashears & Graham


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


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


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


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