Parsons Transportation Group offers planning, design, construction and maintenance services for airports, bridges, highways, rail links and other transit systems. Its quality management system is ISO 9001: 2000-certfied. The group s consumer services division provides an array of solutions to commuter transportation entities. With one of its offices in Chesterfield, Mo., Parsons Transportation Group is owned and operated by the Parsons Corporation, an employee-owned management, engineering and construction company in the United States. Founded in 1944, the Parsons Corporation serves the aviation, industrial, environmental, health care, manufacturing and homeland security markets. It provides technical and management solutions to federal, regional and local government agencies, as well as private industries worldwide.