Interborough Rapid Transit Company
Type | Underground and above-ground metro
Status | Incorporated into the New York City Subway
Opened | 1903; 116 years ago (1903) (acquisition of the Manhattan Railway Company)
Closed | 1940; 79 years ago (1940) (acquisition by the NYC Board of Transportation)
Owner | City of New York
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
Track gauge | 4 ft 8 1⁄2 in (1,435 mm) standard gauge
Minimum radius | 147.25 ft (44.88 m)