CSX Transportation (reporting mark CSXT) is a Class I railroad in the United States, owned by the CSX Corporation. It is one of the three Class I railroads serving most of the East Coast, the other two being the Norfolk Southern Railway and Canadian Pacific Railway. This railroad also serves the Canadian provinces of Ontario and Quebec.  CSX Transportation was formed on July 1, 1986 as a renaming of the Seaboard System Railroad and Chessie System, Inc. into one entity. The originator of the Seaboard System was the former Seaboard Air Line Railroad, which previously merged Atlantic Coast Line Railroad, and later Louisville and Nashville Railroad, as well as several smaller subsidiaries. On August 31, 1987 the Chesapeake and Ohio Railway, which had absorbed the Baltimore and Ohio Railroad on April 30 of that year, merged into CSX. The merger had been started in 1982 with the merger of Chessie System and Seaboard Coast Line Industries to form the CSX Corporation.