Interborough Rapid Transit Company

Interborough Rapid Transit Company
Interborough Rapid Transit Company
	A New York Transit Museum set of IRT Lo-Voltage motor cars at Mosholu Parkway station
Overview
Status	Incorporated into the New York City Subway
Owner	City of New York
Service
Type	Underground and above-ground metro
Operator(s)	New York City Transit Authority
Depot(s)	239th Street Yard, 240th Street Yard,; Corona Yard, East 180th Street Yard,; Jerome Yard, Livonia Yard, Westchester Yard
Rolling stock	R62, R62A, R142, R142A, R188
History
Opened	1904; (acquisition of the Manhattan Railway Company)
Closed	1940; (acquisition by the NYC Board of Transportation)
Technical
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Minimum radius	147.25 ft (44.88 m)

The Interborough Rapid Transit Company (IRT) was the private operator of New York City's original underground subway line that opened in 1904, as well as earlier elevated railways and additional rapid transit lines in New York City.^[2] The IRT was purchased by the city in June 1940, along with the younger BMT and IND systems, to form the modern New York City Subway. The former IRT lines (the numbered routes in the current subway system) are now the A Division or IRT Division of the Subway.

^ "NYC Minimum Curve Radius". Archived from the original on March 18, 2012.
^ "About New York; Alphabet Soup: Telling an IRT From a BMT". The New York Times. June 30, 1990. Retrieved March 14, 2016.

[1] "NYC Minimum Curve Radius". Archived from the original on March 18, 2012.

[2] "About New York; Alphabet Soup: Telling an IRT From a BMT". The New York Times. June 30, 1990. Retrieved March 14, 2016.

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