WSP

AECOM is an international professional technical services company providing consulting, design, program and construction management and operations and maintenance support to the transportation, environmental and building industries. The company serves both government and private clients. AECOM also provides technical support, international development assistance, and mining and power services. AECOM is headquartered in Los Angeles and operates additional offices throughout the United States., Canada, Asia, the Middle East, Africa, Australia and Europe.

Parsons Brinckerhoff s founder William Barclay Parsons designed New York's first subway line and stretched a railroad across China. Since that time, Parsons Brinckerhoff has grown into one of the world's leading planning, engineering, program and construction management, operations and maintenance firms. The company s offerings are an extension of its experience and core skills. Parsons Brinckerhoff has helped shape some of the world's largest and most important public works projects, which includes Boston's Central Artery/Tunnel; Britain's rail system Network Rail; Sabiya power plant in Kuwait; Metro of Cairo, Egypt; and Deep Tunnel Sewerage System in Singapore. Founded in 1885, the company employs approximately 9,700 professionals and support staff in more than 150 offices worldwide. Headquartered in New York, Parsons Brinckerhoff has a location in Orange, Calif.