List of CSX Transportation predecessor railroads.html

CSX system map as of 2006

The following railroads merged to form CSX Transportation.

The Seaboard System Railroad was renamed to CSX Transportation July 1, 1986.
- The Seaboard Coast Line Railroad merged with the Louisville and Nashville Railroad to form the Seaboard System Railroad December 29, 1982.
  - The Atlantic Coast Line Railroad merged with the Seaboard Air Line Railroad to form the Seaboard Coast Line Railroad July 1, 1967.
    - The Charleston and Western Carolina Railway merged into the Atlantic Coast Line Railroad December 31, 1959.
  - The Seaboard Air Line Railroad merged with the Atlantic Coast Line Railroad to form the Seaboard Coast Line Railroad July 1, 1967.
  - The Piedmont and Northern Railway merged into the Seaboard Coast Line Railroad July 1, 1969.
- The Louisville and Nashville Railroad merged with the Seaboard Coast Line Railroad to form the Seaboard System Railroad December 29, 1982.
  - The Nashville, Chattanooga and St. Louis Railway merged into the Louisville and Nashville Railroad August 30, 1957.
  - The Monon Railroad merged into the Louisville and Nashville Railroad July 31, 1971.
- The Georgia Railroad merged into the Seaboard System Railroad in 1983.
The Chesapeake and Ohio Railway merged into CSX Transportation August 31, 1987.
- The Baltimore and Ohio Railroad merged into the Chesapeake and Ohio Railway April 30, 1987.
  - The Western Maryland Railway merged into the Baltimore and Ohio Railroad May 1, 1983.
- The Pere Marquette Railway merged into the Chesapeake and Ohio Railway June 6, 1947.
The Richmond, Fredericksburg and Potomac Railroad, which was majority-owned by CSX, merged into CSX Transportation in 1991.
The Pittsburgh and Lake Erie Railroad, of which part had been used by the Baltimore and Ohio Railroad, sold that portion to CSX Transportation in 1991. On September 11, 1992, CSX Transportation bought the rest through the Three Rivers Railway.

Other companies:

References

CSX merger family tree, Trains