Southside Railroad - Virginia - was created in 1846.
Virginia Central Railroad was created in 1850.
Sacramento Southern Railroad was created in 1903.
Southern Pacific Railroad was created in 1865.
Southern Midland Railroad was created in 1863.
Augusta Southern Railroad was created in 1893.
Vicksburg Southern Railroad was created in 2006.
Valdosta Southern Railroad was created in 1951.
Georgia Southern Railroad was created in 1875.
California Southern Railroad was created in 1880.
Pittsburgh Southern Railroad was created in 1878.
Charlotte Southern Railroad was created in 1999.