Since the opening of the original New York City Subway line in 1904, and throughout the subway's history, various official and planning agencies have proposed numerous extensions to the subway system. The first major expansion of the subway system was the Dual Contracts, a set of agreements between the City of New York and the IRT and the BRT. The system was expanded into the outer reaches of the Bronx, Brooklyn, and Queens, and it provided for the construction of important lines in Manhattan. This one expansion of the system provided for a majority of today's system.
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. 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 are now the A Division or IRT Division of the Subway.
The 167th Street station is a local station on the IRT Jerome Avenue Line of the New York City Subway. Located at the intersection of 167th Street and River Avenue in the Bronx, it is served by the 4 train at all times. This station was constructed by the Interborough Rapid Transit Company as part of the Dual Contracts and opened in 1917.
The 138th Street–Grand Concourse station, also signed as 138th Street–Mott Haven or simply Mott Haven on station signage, is a local station on the IRT Jerome Avenue Line of the New York City Subway, located at the T-intersection of East 138th Street and the Grand Concourse in the Mott Haven neighborhood of the Bronx. It is served by the 4 train at all times except during rush hours in the peak direction, and the 5 train at all times except late nights.
The IRT Ninth Avenue Line, often called the Ninth Avenue Elevated or Ninth Avenue El, was the first elevated railway in New York City. It opened in July 1868 as the West Side and Yonkers Patent Railway, as an experimental single-track cable-powered elevated railway from Battery Place, at the south end of Manhattan Island, northward up Greenwich Street to Cortlandt Street. By 1879 the line was extended to the Harlem River at 155th Street. It was electrified and taken over by the Interborough Rapid Transit Company in 1903.
The IRT Lexington Avenue Line is one of the lines of the A Division of the New York City Subway, stretching from Lower Manhattan north to 125th Street in East Harlem. The line is served by the 4, 5, 6, and <6> trains.
The 149th Street–Grand Concourse station is a New York City Subway station complex shared by the IRT Jerome Avenue Line and the IRT White Plains Road Line. It is located at East 149th Street and Grand Concourse in Mott Haven and Melrose in the Bronx. The complex is served by the 2 and 4 trains at all times, and by the 5 train at all times except late nights.
The IRT Dyre Avenue Line is a New York City Subway rapid transit line, part of the A Division. It is a branch of the IRT White Plains Road Line in the northeastern section of the Bronx, north of East 180th Street. As of 2013, it has a daily ridership of 34,802.
The New York and Putnam Railroad, nicknamed the Old Put, was a railroad line that operated between the Bronx and Brewster in New York State. It was in close proximity to the Hudson River Railroad and New York and Harlem Railroad. All three came under ownership of the New York Central system in 1894. The railroad was abandoned starting in 1958, and most of the former roadbed has been converted to rail trail use.
The IRT Jerome Avenue Line, also unofficially known as IRT Woodlawn Line, is an A Division New York City Subway line mostly along Jerome Avenue in the Bronx. Originally an Interborough Rapid Transit Company-operated route, it was built as part of the Dual Contracts expansion and opened in 1917 and 1918. It is both elevated and underground, with 161st Street–Yankee Stadium being the southernmost elevated station. The line has three tracks from south of the Woodlawn station to the 138th Street–Grand Concourse station. The Woodlawn Line also has a connection to the Jerome Yard, where 4 trains are stored, just north of the Bedford Park Boulevard–Lehman College station.
The Harlem–148th Street station is a New York City Subway station on the IRT Lenox Avenue Line in Harlem, Manhattan. It serves as the northern terminal station of the 3 train at all times as well as the Northern terminal of the IRT Lenox Avenue line. The entrance to the station is located at the intersection of 149th Street and Adam Clayton Powell Jr. Boulevard, which has historically been known as 7th Avenue. The station contains a pair of tracks and an island platform and is located at ground level. A parking structure for the adjacent Frederick Douglass Academy is located above the station, forming a roof above the platform and tracks.
The 155th Street station was an elevated railway station in Manhattan, New York City, that operated from 1870 until 1958. It served as the north terminal of the IRT Ninth Avenue Line from its opening until 1918 and then as the southern terminal of a surviving stub portion from 1940 until its closure in 1958. It had two tracks and one island platform.
The 231st Street station is a local station on the IRT Broadway–Seventh Avenue Line of the New York City Subway. Located at the intersection of West 231st Street and Broadway in the Kingsbridge section of the Bronx, it is served by the 1 train at all times.
The 161st Street–Yankee Stadium station is a New York City Subway station complex shared by the elevated IRT Jerome Avenue Line and the underground IND Concourse Line. It is located at the intersection of 161st Street and River Avenue in the Highbridge and Concourse neighborhoods of the Bronx. It is generally served by the 4 train at all times; the D train at all times except rush hours in the peak direction ; and the B train during rush hours.
The Anderson–Jerome Avenues station was an elevated and partially underground station on the Bronx extension of the IRT Ninth Avenue Line in Highbridge, Bronx, New York City.
The Putnam Bridge was a swing bridge that spanned the Harlem River and the adjacent tracks of the New York Central Railroad in New York City. The bridge connected Harlem in Manhattan to Concourse, near the current location of Yankee Stadium, in the Bronx. It carried two tracks of the New York and Putnam Railroad, and later the 9th Avenue elevated line of the Interborough Rapid Transit Company (IRT), as well as two pedestrian walkways outside the superstructure.
The 138th Street station was a station on the Harlem and Hudson Lines of the New York Central Railroad, serving the community of Mott Haven in the Bronx, New York City. It was the southernmost station along both branches until 1973. The New York, New Haven and Hartford Railroad also ran through this station but did not stop here.
