Below is a list of railroads that were bought, leased, or in other ways had their track come under ownership or control by the Seaboard Air Line Railroad or one of its predecessors. The Seaboard Air Line Railroad merged with the Atlantic Coast Line Railroad on July 1, 1967, to form the Seaboard Coast Line Railroad. Predecessor lines The Seaboard main line from Richmond to Tampa, heart of its 2600-mile system in 1900, (today mostly CSX's "S" Line), had been built by the following companies: Richmond, Petersburg and Carolina Railroad, Richmond, Virginia to Norlina, North Carolina (the immediate predecessor of the SAL) Raleigh and Gaston Railroad, Norlina to Raleigh, North Carolina Raleigh and Augusta Air-Line Railroad, Raleigh to Hamlet, North Carolina Palmetto Railroad, Hamlet to Cheraw, South Carolina Chesterfield and Kershaw Railroad, Cheraw to Camden, South Carolina Predecessors of the Florida Central and Peninsular Railroad: South Bound Railroad, Camden to Savannah, Georgia Florida Central and Peninsular Railroad Northern Division, Savannah to Georgia/Florida state line Florida Northern Railroad, state line to Yulee, Florida Fernandina and Jacksonville Railroad, Yulee to Jacksonville, Florida Florida, Atlantic and Gulf Central Railroad, Jacksonville to Baldwin, Florida Florida Railroad, Yulee to Baldwin to Waldo, Florida Florida Transit and Peninsular Railroad Tampa Division, Waldo to Tampa, Florida Acquired lines In the first decades of the 20th century, Seaboard expanded its holdings by acquiring the following lines, some of which were created by the Seaboard to construct new lines it wished to have. Acquired by purchase: Florida Central and Peninsular Railroad, 1903 Tallahassee, Perry and Southeastern Railway, 1909 Atlanta and Birmingham Air Line Railway, 1909 Atlantic, Suwannee River and Gulf Railway, 1909 Florida West Shore Railway, 1909 Plant City, Arcadia and Gulf Railroad, 1909 Tampa Terminal Railroad, 1922 Jacksonville, Gainesville and Gulf Railroad, 1927 Acquired by lease: Kissimmee River Railway, 1917 Brooksville and Inverness Railway, 1925 Tampa Northern Railroad, 1925 Charlotte Harbor and Gulf Coast Railway, 1925 Seaboard-All Florida Railway, 1925 Naples, Seaboard and Gulf Railway, 1925 Tampa and Gulf Coast Railroad, 1927 Georgia, Florida and Alabama Railroad, 1928 Northern Railway of Florida, 1928 Seaboard Air Line Railway American Agricultural and Chemical Company Athens Terminal Company Atlanta and Birmingham Air Line Railway Chattahoochee Terminal Railway East and West Railroad Birmingham and Atlanta Air Line Railway East and West Railroad of Alabama Cherokee Iron Company Cherokee Iron and Railroad Company Cherokee Railroad Cartersville and Van Wert Railroad Tredegar Mineral Railway