Company Story
1990 - AECOM was founded as a merger of five smaller companies: Ashland Oil Company, Dames & Moore, Maunsell, Roy F. Weston, and Tippetts-Abbett-McCarthy-Stratton.
1992 - AECOM acquired Frederick R. Harris, a leading environmental consulting firm.
1994 - AECOM acquired Maunsell, a UK-based engineering and design consultancy.
1995 - AECOM acquired Dames & Moore, a global engineering and environmental consulting firm.
2000 - AECOM acquired Tippetts-Abbett-McCarthy-Stratton, a leading architecture and engineering firm.
2004 - AECOM acquired URS Corporation, a leading engineering and construction company.
2005 - AECOM acquired MACTEC, a leading environmental and infrastructure consulting firm.
2014 - AECOM acquired URS Corporation, expanding its presence in the infrastructure and government services markets.
2015 - AECOM acquired Hunt Construction Group, a leading construction management firm.
2016 - AECOM acquired Shimmick Construction, a leading heavy civil construction firm.