CSX Corporation was formed in 1980 by the merger of Chessie System and Seaboard Coast Line, each of which was the product of many previous mergers. Component railroads included some of the greatest names in rail history such as Baltimore & Ohio, Chesapeake & Ohio, Atlantic Coast Line, Seaboard Air Line, and Louisville & Nashville, as well as Georgia Railroad, Clinchfield, the West Point Route, and others. The Baltimore & Ohio, chartered in 1827, was the country's oldest common carrier railroad; the Louisville & Nashville was one of the strongest railroads in the east, and the Atlantic Coast Line justifiably called itself the Standard Railroad of the South.
For legal reasons the Chessie and SCL railroads operated independently until 1986-87, during which time some rather confusing additional sub-mergers and name changes were made. In 1983, Seaboard Coast Line, Louisville & Nashville, Georgia Railroad, and the Clinchfield merged to become Seaboard System Railroad. Three years later, in 1986, Seaboard System changed its name to CSX Transportation. The Chessie's railroads, C&O, B&O, and Western Maryland, were not initially included in the merger, but the following year B&O was merged into C&O and, a few months later, the C&O was merged into CSX Transportation.
The name CSX is said to represent the merger by combining the first letters of Chessie and Seaboard along with an X to signify multiplying the combined strength of the two railroads. It must have worked because CSX is now one of the nation's largest railroad companies. In Georgia, like most of the eastern US, there are only two railroads of substantial size, CSX and Norfolk Southern.
• Richland/Kimbrough - Dawson (former Columbus Southern) abandoned 1981.
• Climax - Chattahoochee, FL (former SF&W) abandoned 1984.
• Athens - Union Point (former Georgia Railroad) abandoned 1984.
• Macon - Milledgeville (former Georgia Railroad) abandoned 1985.
• Sylvester - Pearson (former Brunswick & Western) abandoned 1985.
• Alma - Sessoms (former AB&A) abandoned 1986.
• Bladen - Riceboro (former FC&P) abandoned 1986.
• Mineral Bluff - Murphy, NC (former M&NG) abandoned 1986.
• Bladen - Seals (former FC&P) abandoned 1988.*
• DuPont - Live Oak, FL (former ACL) abandoned in 1988. (Map).
• Edna (SE Cobb County) - Rockmart (former Seaboard) abandoned in 1988.
• Ellijay - Blue Ridge (former M&NG) discontinued in 1989. Later reopened.
• Fitzgerald - Ocilla (former Seaboard) abandoned 1990.
• Moultrie - Coolidge (former AB&A) abandoned 1990.
• Cusseta-Richland-Cuthbert (former Seaboard) abandoned 1995.
*Bladen is in western Glynn County, 19 miles from Brunswick. Seals is about halfway between Woodbine and Kingsland.