AECOM is integrating its North American operations into five organizational entities: water, transportation, design, energy and environment. Effective October 2008, DMJM Aviation, CTE, HSMM, STS, TCB, Boyle and Earth Tech are known collectively as AECOM Transportation. AGC member since 2007.
Phone: (206) 438-2700
Fax: (206) 438-2699
1111 - 3rd Ave., Ste. 1600
Seattle, WA  98101
Michael Horton
VP Transportation Business Unit Leader

OAC Services, Inc.

Architects, engineers, and construction management. AGC member since 2009.
Phone: (206) 285-4300
Fax: (206) 285-4370
701 Dexter Ave. N, Ste. 301
Seattle, WA  98109