Early history of the IRT subway

The first regularly operated subway in New York City was opened on October 27, 1904, and was operated by the Interborough Rapid Transit Company (IRT). The early IRT system consisted of a single trunk line below 96th Street in Manhattan, with three northern branches in Upper Manhattan and the Bronx, and a southern branch to Brooklyn. The system had four tracks between Brooklyn Bridge–City Hall and 96th Street, allowing for local and express service. The original line and early extensions consisted of:

Early history of the IRT subway

The first regularly operated subway in New York City was opened on October 27, 1904, and was operated by the Interborough Rapid Transit Company (IRT). The early IRT system consisted of a single trunk line below 96th Street in Manhattan, with three northern branches in Upper Manhattan and the Bronx, and a southern branch to Brooklyn. The system had four tracks between Brooklyn Bridge–City Hall and 96th Street, allowing for local and express service. The original line and early extensions consisted of: