The Louis Berger Group, located in Washington, D.C., is one of nine members of the Berger Group family of firms. The Berger Group is one of the leading infrastructure engineering, environmental science and economic development operations in the world. Since its beginning, the Berger Group has been involved in the planning, design and construction management of over 100,000 miles of highway; 2,000 miles of railroad; 3,000 bridges; 100 airfields, seaports, dams and water supply systems; and numerous environmental mitigation projects and diverse cultural preservation projects. The company maintains offices throughout the United States and 140 additional countries. Louis Berger founded the Berger Group in 1953.