In 1985, Ashland, Inc., a Kentucky-based oil company, created an architectural, engineering and construction management subsidiary called Ashland Technology Corporation (ATC). Five years later, that entity evolved into AECOM, an independent firm formed by the merger of six separate companies. While AECOM’s official founding was in 1990, some of those predecessor firms had distinguished histories dating back to the early 1900s.

Since then, more than 30 companies have joined AECOM and in 2007, we became a publicly traded company on the New York Stock Exchange (NYSE: ACM). 

Today, listed on the Fortune 500 list as one of America’s largest companies, AECOM has approximately 45,000 employees located in 100 countries. 

Our technical expertise and creative excellence comes from the rich history of some of the world’s finest engineering, environmental, planning and design companies. From transportation, energy and water systems, to enhancing environments and creating new buildings and communities, our vision is to make the world a better place.

What sets us apart is our collaborative way of working globally and delivering locally. A trusted partner to our clients, we draw together teams of engineers, planners, architects, landscape architects, environmental specialists, economists, scientists and program managers dedicated to finding the most innovative and appropriate solutions to enhance and sustain the world’s built, natural and social environments.

We are proud to be recognized in Engineering News-Record’s (ENR) 2009 Top 500 Design Firms' rankings, where AECOM is ranked #2 overall. In addition, we lead in several key market sectors, ranking #1 in Pure Design, Transportation, General Building and Hazardous Waste. And in 2009, Newsweek includes AECOM on its list of Greenest Big Companies.