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1001 4th Ave.
Suite 3100
Seattle, WA 98154
(206) 382-6342

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From its earliest roots in the U.S. over 130 years ago, WSP built its name by engineering infrastructure that can redefine sectors, prepare environments and communities for future realities.

An international presence founded on sustained local action continues to fuel growth and expansion at WSP as its passionate teams drive new approaches to complex problems from and deliver solutions that break paradigms.