he Alabama, Tennessee & Northern Railroad was a short line railroad operating within the state of Alabama. It was founded in 1897 as the Carrollton Short Line Railway in order to link the city of Carrollton with a Mobile & Ohio Railroad connection at Reform, Alabama. Through various mergers and expansions, the railroad eventually reached south to the port of Mobile. It was operated in conjunction with the Tombigbee Valley Railroad, to the north, from Calvert to Silas, Alabama. In 1948, the railroad was purchased by the St. Louis-San Francisco Railway, who operated the ATN as a separate entity until 1971, when it was absorbed into the modern Frisco system. The short line route survived into the Burlington Northern merger, but was later abandoned.