CSX

CSX Transportation
Reporting mark	CSXT
Locale	Alabama Delaware Florida Georgia Illinois Indiana Iowa Kentucky Louisiana Maryland Michigan Mississippi Missouri New Jersey New York North Carolina Ohio Ontario Pennsylvania Quebec South Carolina Tennessee Virginia Washington D.C. West Virginia
Dates of operation	1986–present
Predecessor	Chessie System Seaboard System Railroad
Track gauge	4 ft 8 1⁄2 in (1,435 mm) (standard gauge)
Length	21,000 mi (34,000 km)
Headquarters	Jacksonville, Florida
Website	csx.com

CSX Transportation (reporting mark CSXT) is a Class I railroad in the United States. It is the main subsidiary of the CSX Corporation. The company is headquartered in Jacksonville, Florida, and owns approximately 21,000 route miles (34,000 km). CSX operates one of the three Class I railroads serving most of the East Coast, the other two being the Norfolk Southern Railway (NS) and Canadian Pacific Railway. This railroad also serves the Canadian provinces of Ontario and Quebec.