It provided horsecar service for passengers traveling between South Boston and the city downtown.
[1] Originally formed as the Broadway Railroad, the company was incorporated on April 29, 1854, and commenced operations four years later.
The original route granted to the railway ran from South Boston Point (now City Point), at the eastern extremity of Fourth Street, to a point near the intersection of Broadway and Turnpike Street (now Dorchester Avenue), where it merged with the tracks of the Dorchester Avenue Railroad.
[4] In early 1887 the railroad experienced a worker's strike that lasted for over a month, causing significant disruptions in service.
[5] In 1887 the West End Street Railway gained a controlling interest in the South Boston, and the railroad was formally consolidated into the West End on November 12 of that year.