Twitter logo Youtube logo

Home: Our LocationsUSAAbout Us › WSP USA


Our Environment & Energy business is part of the 950 strong WSP USA operation which in turn is part of WSP and GENIVAR, one of the world’s leading professional services firms with 14,500 employees based in more than 300 locations worldwide. 


In the USA, 4 sister companies comprise WSP USA delivering design, engineering and infrastructure services, in addition to our environment and energy expertise. Our sister companies are profiled below:  


  • WSP Cantor Seinuk – specializing in structural engineering
  • WSP Flack + Kurtz – specializing in mechanical, electrical and plumbing engineering
  • WSP SELLS – specializing in bridge, highway and infrastructure engineering



WSP Cantor Seinuk

WSP Cantor Seinuk is one of North America’s leading structural firms and winner of over 90 awards for engineering excellence. With headquarters in New York and offices in London, Los Angeles, Dubai and New Delhi, they are renowned for innovative high-rise building designs. This has been applied to projects such as the Freedom Tower and Time Warner Center in New York.


WSP Flack + Kurtz

WSP acquired Flack + Kurtz in 2000 as a global leader in MEP (mechanical, electrical and plumbing) engineering and energy conservation and sustainability. With principal offices in New York, San Francisco, London and Hong Kong, they have been involved in world class projects including; the Petronas Towers in Kuala Lumpur, the Olympic Stadium in Sydney, the City Center in Las Vegas, and Hearst Tower, one of the first office facilities in New York to achieve a LEED® Gold rating.



WSP SELLS is headquartered in New York with offices throughout the east coast and is a leading eastern U.S. transportation and infrastructure engineering firm.  They have provided award-winning services on all sizes of bridge, highway and infrastructure projects, including the billion-dollar reconstruction of the Gowanus Expressway Viaduct, one of the longest viaducts in the country, as well as condition inspections on landmark bridge structures such as the Brooklyn Bridge and the George Washington Suspension Bridge.


For more information on WSP Group in the US, visit our USA portal.

WSP USA - capability

WSP USA – capability

Find out about our full range of services and expertise in the USA, from the environment to building design to infrastructure.

Download our brochure here.

WSP USA - capability

WSP At Its Best

WSP At Its Best

Browse our WSP ‘At Its Best’ projects book to learn more about all our capabilities and our extensive track record in delivery worldwide.

Read more.

WSP At Its Best