Chatham Square was a station on the demolished IRT Third Avenue Line

IRT Third Avenue Line

The IRT Third Avenue Line, commonly known as the Third Avenue El, was an elevated railway in Manhattan and the Bronx, New York City. Originally operated by an independent railway company, it was acquired by the Interborough Rapid Transit Company and eventually became part of the New York subway...

. It had two levels. The lower level had two tracks and one island platform

Island platform

An island platform is a station layout arrangement where a single platform is positioned between two tracks within a railway station, tram stop or transitway interchange...

 that served trains of both the IRT Second Avenue Line

IRT Second Avenue Line

The IRT Second Avenue Line, also known as the Second Avenue El, was an elevated railway in Manhattan, New York City, United States, operated by the Interborough Rapid Transit Company until city takeover in 1940...

 and IRT Third Avenue Line

IRT Third Avenue Line

The IRT Third Avenue Line, commonly known as the Third Avenue El, was an elevated railway in Manhattan and the Bronx, New York City. Originally operated by an independent railway company, it was acquired by the Interborough Rapid Transit Company and eventually became part of the New York subway...

. The upper level had three tracks and two island platform

Island platform

An island platform is a station layout arrangement where a single platform is positioned between two tracks within a railway station, tram stop or transitway interchange...

s that served trains of both lines going to and from City Hall

City Hall (IRT Second Avenue Line)

City Hall was a station on the IRT Second Avenue Line, which also served trains of the IRT Third Avenue Line. It had 2 levels. The lower level served Third Avenue trains and had two tracks with two side platforms for exiting passengers, and a center island platform for entering passengers...

. The next stop to the north was Canal Street

Canal Street (IRT Third Avenue Line)

Canal Street was a station on the demolished IRT Third Avenue Line. It had three tracks and two island platforms. The next stop to the north was Grand Street. The next stop to the south was Chatham Square. The station closed on May 12, 1955....

 for IRT Third Avenue Line

IRT Third Avenue Line

The IRT Third Avenue Line, commonly known as the Third Avenue El, was an elevated railway in Manhattan and the Bronx, New York City. Originally operated by an independent railway company, it was acquired by the Interborough Rapid Transit Company and eventually became part of the New York subway...

 trains, and Canal Street

Canal Street (IRT Second Avenue Line)

Canal Street was a station on the demolished IRT Second Avenue Line. It had two levels. The lower level had two tracks and two side platforms and the upper level had one track that served the express trains. The next stop to the north was Grand Street. The next stop to the south was Chatham Square....

 for IRT Second Avenue Line

IRT Second Avenue Line

The IRT Second Avenue Line, also known as the Second Avenue El, was an elevated railway in Manhattan, New York City, United States, operated by the Interborough Rapid Transit Company until city takeover in 1940...

 trains. The next stop to the south was Franklin Square

Franklin Square (IRT Third Avenue Line)

Franklin Square was a station on the demolished IRT Third Avenue Line in New York City. It had two tracks and one island platform, and was the northernmost station on the line that shared both Second Avenue and Third Avenue trains. The next stop to the north was Chatham Square. The next stop to the...

 for trains to South Ferry

South Ferry (IRT elevated station)

South Ferry was an elevated station at the southern terminal of the IRT Second, Third, Sixth and Ninth Avenue Lines. Two tracks came from the combined Second and Third, and two from the Sixth and Ninth, making four tracks at the terminal, with platforms on the outside and between each pair of tracks...

, and City Hall

City Hall (IRT Second Avenue Line)

City Hall was a station on the IRT Second Avenue Line, which also served trains of the IRT Third Avenue Line. It had 2 levels. The lower level served Third Avenue trains and had two tracks with two side platforms for exiting passengers, and a center island platform for entering passengers...

for City Hall-bound trains. The station closed on May 12, 1955.