
The Interborough Rapid Transit Company (IRT) was the
private operator of
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
's original underground subway line that opened in 1904, as well as earlier
elevated railways and additional
rapid transit
Rapid transit or mass rapid transit (MRT) or heavy rail, commonly referred to as metro, is a type of high-capacity public transport that is generally built in urban areas. A grade separation, grade separated rapid transit line below ground su ...
lines in
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
. The IRT was purchased by the city on June 12, 1940, along with the younger
BMT and
IND
Ind or IND may refer to:
General
* Independent (politician), a politician not affiliated to any political party
* Independent station, used within television program listings and the television industry for a station that is not affiliated with ...
systems, to form the modern
New York City Subway
The New York City Subway is a rapid transit system in New York City serving the New York City boroughs, boroughs of Manhattan, Brooklyn, Queens, and the Bronx. It is owned by the government of New York City and leased to the New York City Tr ...
. The former IRT lines (the numbered routes in the current subway system) are now the
A Division or IRT Division of the Subway.
History
The
first IRT subway ran between
City Hall
In local government, a city hall, town hall, civic centre (in the UK or Australia), guildhall, or municipal hall (in the Philippines) is the chief administrative building of a city, town, or other municipality. It usually houses the city o ...
and
145th Street at
Broadway, opening on October 27, 1904. It opened following more than twenty years of public debate on the merits of subways versus the existing
elevated rail system and on various proposed routes.
Founded on May 6, 1902, by
August Belmont, Jr., the IRT's mission was to operate New York City's initial underground rapid transit system after Belmont's and
John B. McDonald's Rapid Transit Construction Company was awarded the rights to build the railway line in 1900, outbidding
Andrew Onderdonk.
The
Manhattan Railway Company was the operator of four elevated railways in
Manhattan
Manhattan ( ) is the most densely populated and geographically smallest of the Boroughs of New York City, five boroughs of New York City. Coextensive with New York County, Manhattan is the County statistics of the United States#Smallest, larg ...
with an extension into
the Bronx
The Bronx ( ) is the northernmost of the five Boroughs of New York City, boroughs of New York City, coextensive with Bronx County, in the U.S. state of New York (state), New York. It shares a land border with Westchester County, New York, West ...
.
On April 1, 1903, over a year before its first subway line opened, the IRT acquired the Manhattan Railway Company by lease, gaining a monopoly on rapid transit in Manhattan. The IRT coordinated some services between what became its subway and elevated divisions, but all the lines of the former Manhattan elevateds have since been dismantled.
In 1913, as a result of massive expansion in the city, the IRT signed the
Dual Contracts with
Brooklyn Rapid Transit (BRT) in order to expand the subway. The agreement also locked the subway fare at 5 cents for forty-nine years. The IRT unsuccessfully attempted to raise the fare to seven cents in 1929, in a case that went to the
United States Supreme Court
The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that turn on question ...
.
The IRT ceased to function as a privately held company on June 12, 1940, when its properties and operations were acquired by the City of New York.
Today, the IRT lines are operated as the
A Division of the subway. The remaining lines are underground in Manhattan, except for a short stretch across
Harlem
Harlem is a neighborhood in Upper Manhattan, New York City. It is bounded roughly by the Hudson River on the west; the Harlem River and 155th Street on the north; Fifth Avenue on the east; and Central Park North on the south. The greater ...
at
125th Street and in northern Manhattan. Its many lines in the Bronx are predominantly elevated, with some subway, and some railroad-style right-of-way acquired from the defunct
New York, Westchester and Boston Railway, which now constitutes the
IRT Dyre Avenue Line. Its Brooklyn lines are underground with a single elevated extension that reaches up to
New Lots Avenue, and the other reaching
Flatbush Avenue
Flatbush Avenue is a major avenue in the New York City Borough (New York City), Borough of Brooklyn. It runs from the Manhattan Bridge south-southeastward to Jamaica Bay, where it joins the Marine Parkway–Gil Hodges Memorial Bridge, which ...
via the underground
Nostrand Avenue Line.
The
Flushing Line, its sole line in
Queens
Queens is the largest by area of the Boroughs of New York City, five boroughs of New York City, coextensive with Queens County, in the U.S. state of New York (state), New York. Located near the western end of Long Island, it is bordered by the ...
, is entirely elevated except for a short portion approaching its East River tunnel and its terminal at
Flushing–Main Street (the whole Manhattan portion of the line is underground). The Flushing Line has had no track connection to the rest of the IRT since 1942, when service on the
Second Avenue El was discontinued. It is connected to the
BMT and the rest of the system via the
BMT Astoria Line on the upper level of the
Queensboro Plaza station.
Lines

Original IRT system (1904–1909)
Source:
Subway Division
* West Branch
**
Broadway Line (
Atlantic Avenue to
242nd Street, with intermediate terminals at
South Ferry and
City Hall
In local government, a city hall, town hall, civic centre (in the UK or Australia), guildhall, or municipal hall (in the Philippines) is the chief administrative building of a city, town, or other municipality. It usually houses the city o ...
)
* East Branch
**
Lenox Avenue Line (Atlantic Avenue to
145th Street, with intermediate terminals at South Ferry and City Hall)
**
Westchester Avenue Branch (
135th Street to
180th Street)
Manhattan Railway Division
* Eastern Division
**
Second Avenue Line (
South Ferry to
129th Street)
**
Third Avenue Line (South Ferry to
Bronx Park Terminal)
** City Hall Branch (
City Hall
In local government, a city hall, town hall, civic centre (in the UK or Australia), guildhall, or municipal hall (in the Philippines) is the chief administrative building of a city, town, or other municipality. It usually houses the city o ...
to
Chatham Square)
** 34th Street Branch (
Third Avenue to
34th Street Ferry)
** 42nd Street Branch (
42nd Street to
Grand Central)
** Willis Avenue Branch (
129th Street to
Willis Avenue)
* Western Division
**
Sixth Avenue Line (South Ferry to
155th Street, with an intermediate terminal at
58th Street)
**
Ninth Avenue Line (South Ferry to 155th Street)
Expansion (1917–1928)
The Bronx and Manhattan
Trunk lines include:
*
Lexington Avenue Line (), under Park and Lexington Avenues, as well as under
Lafayette Street
Lafayette Street ( ) is a major north–south street in Lower Manhattan, New York City. It originates at the intersection of Reade Street and Centre Street, one block north of Chambers Street. The one-way street then successively runs throu ...
and Broadway
*
Broadway–Seventh Avenue Line (), under and over Broadway, as well as under Seventh Avenue,
Varick Street, and
West Broadway
*
Flushing Line (), under 41st and 42nd Streets
*
42nd Street Line (), under 42nd Street
Branch lines include:
*
Lenox Avenue Line (), under
Lenox Avenue
Lenox Avenue – also named Malcolm X Boulevard; both names are officially recognized – is the primary north–south route through Harlem in the Upper Manhattan, upper portion of the New York City boroughs of New York City, borough ...
and Central Park
*
White Plains Road Line (), under East 149th Street, and over Westchester Avenue, Southern Boulevard, Boston Road, and
White Plains Road
*
Pelham Line (), under East 138th Street and
Southern Boulevard, and over
Westchester Avenue
*
Jerome Avenue Line (), under
Grand Concourse, over River and Jerome Avenues,
Brooklyn and Queens
There were three Brooklyn lines built by the IRT:
*
Eastern Parkway Line (), under
Fulton Street,
Flatbush Avenue
Flatbush Avenue is a major avenue in the New York City Borough (New York City), Borough of Brooklyn. It runs from the Manhattan Bridge south-southeastward to Jamaica Bay, where it joins the Marine Parkway–Gil Hodges Memorial Bridge, which ...
, and
Eastern Parkway
Eastern Parkway is a major east–west boulevard in the borough (New York City), New York City borough of Brooklyn. Designed by Frederick Law Olmsted and Calvert Vaux, it was built between 1870 and 1874 and has been credited as the world's fir ...
*
New Lots Line (), over East 98th Street and Livonia Avenue
*
Nostrand Avenue Line (), under Nostrand Avenue
The only line in
Queens
Queens is the largest by area of the Boroughs of New York City, five boroughs of New York City, coextensive with Queens County, in the U.S. state of New York (state), New York. Located near the western end of Long Island, it is bordered by the ...
is the
Flushing Line (), under 50th Avenue, and over
Queens Boulevard and
Roosevelt Avenue.
River crossings
(of the East and Harlem Rivers, from south to north)
*
Joralemon Street Tunnel ()
*
Clark Street Tunnel ()
*
Steinway Tunnel ()
*
Lexington Avenue Tunnel ()
*
149th Street Tunnel ()
*
Broadway Bridge ()
After 1940
*
Dyre Avenue Line (), parallel to the Esplanade, and on the old right-of-way of the
New York, Westchester and Boston Railway in 1941
*
Flushing Line, in October 1949, the joint BMT/IRT service arrangement ended. The Flushing Line became the responsibility of IRT. The
Astoria Line had its platforms shaved back for exclusive BMT operation.
*
Lenox Avenue Line to
Harlem–148th Street (), at-grade parallel to 149th Street in 1968
*
Broadway–Seventh Avenue Line to new
South Ferry island-platformed stations, opened in March 2009. It closed temporarily from October 28, 2012, to June 27, 2017, because of
Hurricane Sandy
Hurricane Sandy (unofficially referred to as Superstorm Sandy) was an extremely large and devastating tropical cyclone which ravaged the Caribbean and the coastal Mid-Atlantic (United States), Mid-Atlantic region of the United States in late ...
.
*
Flushing Line to
34th Street–Hudson Yards (), under 41st Street and
11th Avenue, opened in September 2015
Surviving IRT equipment
Several pieces of pre-unification IRT equipment have been preserved in various museums. While some of the equipment are operational, others are in need of restoration or are used simply as static displays.
*
Manhattan El revenue collection car G is preserved at the
Shore Line Trolley Museum.
* IRT elevated motorman instruction car 824 is preserved at the
Shore Line Trolley Museum.
*
Richmond Shipyard Railway cars 561 and 563 (ex-Manhattan El cars 844 and 889) are preserved at the
Western Railway Museum
The Western Railway Museum, in Solano County, California is located on California State Route 12, Highway 12 between Rio Vista, California, Rio Vista and Suisun, California, Suisun. The museum is built along the former mainline of the
Sacrament ...
in Rio Vista, California.
* The private car of
August Belmont Jr., numbered 3344 and named the ''Mineola'', is preserved at the
Shore Line Trolley Museum.
*
Gibbs car 3352 is preserved at the
Seashore Trolley Museum.
*
Deck Roof car 3662 is preserved at the
Shore Line Trolley Museum.
*
Lo-V cars 4902, 5290, 5292, 5443, 5466, 5483 and 5600 have been preserved. Cars 4092, 5290, 5292, 5442 and 5483 are preserved by the
New York Transit Museum and Railway Preservation Corp. Car 5466 is preserved at the
Shore Line Trolley Museum. Car 5600 is preserved at the
Trolley Museum of New York.
*
World's Fair Lo-V car 5655 is preserved by the
New York Transit Museum.
See also
Other NYC Subway companies:
*
Brooklyn–Manhattan Transit Corporation (BMT)
*
Brooklyn Rapid Transit Company (BRT)
*
Independent Subway System (ISS)
Also:
*
History of the IRT subway before 1918
*
New York IRT — Soccer team sponsored by IRT
*
IRT Rangers — Soccer team sponsored by IRT
References
External links
*
*
*
{{DEFAULTSORT:Interborough Rapid Transit Company
Belmont family
Defunct New York (state) railroads
Defunct public transport operators in the United States
Historic American Engineering Record in New York City
History of the New York City Subway
Transportation companies of the United States
Transportation companies based in New York City
1904 establishments in New York City
1940 disestablishments in New York (state)