<Tr> <Th> Headquarters </Th> <Td> Jacksonville, Florida </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.csx.com </Td> </Tr> <P> CSX Transportation (reporting mark CSXT) is a Class I railroad operating in the eastern United States and the Canadian provinces of Ontario and Quebec . Headquartered in Jacksonville, Florida, the railroad operates approximately 21,000 route miles (34,000 km) of track . </P> <P> CSX Transportation was formed on November 1, 1980, by combining the railroads of the former Chessie System with Seaboard Coast Line Industries, and finally with the Seaboard System Railroad in 1986 . The originator of the Seaboard System was the former Seaboard Air Line Railroad, which previously merged with the Atlantic Coast Line Railroad in 1967, and later with the Louisville & Nashville Railroad, as well as several smaller subsidiaries such as the Clinchfield Railroad, Atlanta & West Point Railroad, Monon Railroad and the Georgia Railroad . The origin of the Chessie System was the former Chesapeake & Ohio Railway, which had merged with the Baltimore & Ohio Railroad, and the Western Maryland Railway. b Despite the merger in 1980, CSX Transportation never had its own identity (meaning no CSX painted locomotives or rolling stock) as a common carrier railroad until 1986 </P>

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