New York State Route 100 (NY 100) is a major north–south state highway in
Westchester County, New YorkWestchester County is a primarily suburban county located in the U.S. state of New York. Westchester covers an area of 450 square miles and has a diverse population of approximately 950,000, residing in 45 municipalities...
. It begins parallel to
Interstate 87Interstate 87 is a long intrastate Interstate Highway located entirely within New York, United States. It is the longest intrastate Interstate Highway in the Interstate Highway System. Its southern end is at the The Bronx approach to the Robert F. Kennedy Bridge in New York City...
at a junction with the
Cross County ParkwayThe Cross County Parkway is a long parkway in Westchester County, New York. The parkway is a critical east-west connection throughout Westchester, having full interchanges with every major north-south parkway in southern Westchester, in addition to the New York State Thruway mainline. The western...
in the city of Yonkers and runs through most of the length of the county via the city of
White PlainsThe City of White Plains is the county seat of Westchester County, New York, United States. It is located in south-central Westchester, about east of the Hudson River and northwest of Long Island Sound...
up to
US 202U.S. Route 202 is a part of the U.S. Highway System that runs from New Castle, Delaware, to Bangor, Maine. In the U.S. state of New York, US 202 extends from the New Jersey state line near Suffern to the Connecticut state line east of Brewster. While most of US 202 is signed...
in the town of Somers just south of the county line with
Putnam CountyPutnam County is a county located in the U.S. state of New York, in the lower Hudson River Valley. Putnam county formed in 1812, when it detached from Dutchess County. , the population was 100,570. It is part of the New York Metropolitan Area. The county seat is Carmel...
. NY 100 was designated as part of the 1930 state highway renumbering. Prior to becoming a state road, various sections of NY 100 were part of several important early roads in the county.
Route description
The highway begins in
YonkersYonkers is the fourth most populous city in the state of New York , and the most populous city in Westchester County, New York, with a population of 196,086 . More recent estimates put the population at 197,234 in 2002, 197,126 in 2004 and 196,425 in 2005...
city as
Central Park Avenue at Exit 4 of the
New York State ThruwayThe New York State Thruway is a limited-access toll highway in the U.S. state of New York...
(I-87). This portion of Central Park Avenue is maintained by Westchester County with unsigned county road designations CR 47II. Central Park Avenue continues south into the Bronx and serves as a frontage road for I-87 in this area. NY 100 diverges from I-87 just north of Exit 5 and heads northeast, crossing over the
Sprain Brook ParkwayThe Sprain Brook Parkway is a long north-south parkway in Westchester County, New York. It is one of the newest and most modern parkways in Westchester County, adopting many ideas and improvements developed during decades of statewide highway construction. The southern terminus is at the Bronx...
about beyond the split. Central Park Avenue continues out of the city of Yonkers in the area between the Grassy Sprain Reservoir and the
Bronx RiverThe Bronx River, approximately long, flows through southeast New York in the United States. It is named after Colonial settler Jonas Bronck.It originally rose in what is now the Kensico Reservoir, in Westchester County north of New York City...
into the town of
GreenburghGreenburgh is a town in the western part of Westchester County, New York, United States. The population was 86,764 at the 2000 census. Paul J. Feiner has been Town Supervisor since 1991.-Geography:...
. NY 100 runs through the hamlet of
HartsdaleHartsdale is a hamlet and a census-designated place located in the town of Greenburgh, Westchester County, New York. The population was 9,830 at the 2000 census.-Geography:Hartsdale is located at ....
, about two miles (3 km) north of the city line, and where the loop route NY 100A (Hartsdale Avenue) begins. Central Park Avenue then enters the city limits of
White PlainsThe City of White Plains is the county seat of Westchester County, New York, United States. It is located in south-central Westchester, about east of the Hudson River and northwest of Long Island Sound...
, where the road ends at NY 119 (Tarrytown Road). Within White Plains, the road is county-maintained with unsigned designations of CR 99 and CR 90.
NY 100 north follows NY 119 west for a overlap through the town center of
GreenburghGreenburgh is a town in the western part of Westchester County, New York, United States. The population was 86,764 at the 2000 census. Paul J. Feiner has been Town Supervisor since 1991.-Geography:...
. Access to I-287 and the
Bronx River ParkwayThe Bronx River Parkway is a long parkway in downstate New York. It is named for the nearby Bronx River, which it parallels. The southern terminus of the parkway is at Story Avenue near Bruckner Expressway in the Bronx neighborhood of Soundview...
can be made in the vicinity of the 100/119 overlap. NY 100 then splits off to the north using
Hillside Avenue and
Grasslands Road as it goes around the perimeter of
Westchester Community CollegeWestchester Community College is a public, two-year community college in Valhalla, New York, sponsored by Westchester County, New York, and the State University of New York . The college is one of 30 community colleges affiliated with SUNY.-History:...
. At a four-way intersection between Grasslands Road, Knollwood Road, and Bradhurst Avenue, NY 100 meets with the north end of NY 100A (Knollwood Road) and the east end of NY 100C (Grasslands Road). To continue on NY 100, one must turn north onto
Bradhurst Avenue. Bradhurst Avenue leads into the hamlet of
HawthorneHawthorne is an unincorporated hamlet and census-designated place located in the town of Mount Pleasant in Westchester County, New York. The population was 5,083 at the 2000 census.-History:...
within the town of
Mount PleasantMount Pleasant is a town in Westchester County, New York, in the United States. As of the 2000 census, the town population was 43,221.-Geography:...
, crossing under the
Sprain Brook ParkwayThe Sprain Brook Parkway is a long north-south parkway in Westchester County, New York. It is one of the newest and most modern parkways in Westchester County, adopting many ideas and improvements developed during decades of statewide highway construction. The southern terminus is at the Bronx...
along the way. NY 100 then shifts onto Saw Mill River Road (NY 9A) using a brief section of NY 141 (Broadway). From this junction, Saw Mill River Road (carrying 9A and 100) is a partially controlled-access highway as it continues north alongside the
Taconic State ParkwayThe Taconic State Parkway is a part of the New York highway system. For most of its route, the TSP is four lanes. All of the parkway in Westchester County north of the Sprain Brook Parkway is now a six lane limited-access freeway...
. It has a grade-separated junction with NY 117 (Bedford Road) about north of the 9A/100 merge. 9A and 100 then enter the eastern edge of the village of
Briarcliff ManorBriarcliff Manor is a village in Westchester County in the state of New York. It is shared between the towns of Mount Pleasant and Ossining, and lies entirely within the ZIP code of 10510...
.
NY 100 then branches off on its own again in Briarcliff Manor, with NY 9A continuing north along the Briarcliff-Peekskill Parkway and NY 100 continuing northeast on the Saw Mill River Road, which roughly follows New York Central's old Putnam Division railroad. Many of the railroad's old stations can still be found along the highway. NY 100 passes through
New CastleNew Castle is a town in Westchester County, New York, United States. The population was 17,491 at the 2000 census.-Geography:According to the United States Census Bureau, the town has a total area of 23.5 square miles , of which, 23.2 square miles of it is land and 0.3 square miles ...
and meets NY 133 in the hamlet of
MillwoodMillwood is a hamlet located in the town of New Castle, New York in Westchester County. It was originally settled as Sarlesville. The area now known as Millwood appears on 19th century maps as Merritt's Corners and Rockdale Mills...
, where access to the
Taconic State ParkwayThe Taconic State Parkway is a part of the New York highway system. For most of its route, the TSP is four lanes. All of the parkway in Westchester County north of the Sprain Brook Parkway is now a six lane limited-access freeway...
can also be made. From here, NY 100 then follows the path of the
Croton Turnpike (alternatively known in the area as Somerstown Turnpike and also as Saw Mill River Road). The road continues into the town of
YorktownYorktown is a town in Westchester County, New York, in the suburbs of New York City about 38 miles north of midtown Manhattan. The town lies on the north border of Westchester county...
, passing by the hamlet of Kitchawan. NY 100 then crosses the
Croton ReservoirCroton Reservoir can refer to:* Croton Distributing Reservoir: completed in 1842 and demolished in 1899.* New Croton Reservoir: completed in 1905 and still in service....
on
Pines Bridge. After crossing the reservoir, NY 118 splits off to the west on Saw Mill River Road, while NY 100 continues northeast on the Croton Turnpike.
The Croton Turnpike continues into the town of
SomersSomers is a town located in northeastern Westchester County, New York, United States. As of the 2000 census, the town had a total population of 18,346...
, passing by some of the last remaining rural areas in Westchester County, including
Muscoot FarmMuscoot Farm is an early 1900s interpretative farm museum near Somers, New York in the United States. The farm is owned and operated by the Westchester County Department of Parks, Recreation and Conservation.-History:...
, a county owned early-1900's interpretive farm. North of the farm NY 100 intersects with NY 35 in the hamlet of Whitehall Corners, where a Pepsi Cola plant is located. In its northern extremes, NY 100 roughly parallels the Croton Reservoir on the north side before meeting up with
US 202U.S. Route 202 is a part of the U.S. Highway System that runs from New Castle, Delaware, to Bangor, Maine. In the U.S. state of New York, US 202 extends from the New Jersey state line near Suffern to the Connecticut state line east of Brewster. While most of US 202 is signed...
in the hamlet of
SomersSomers is a town located in northeastern Westchester County, New York, United States. As of the 2000 census, the town had a total population of 18,346...
, where it ends opposite the
Elephant HotelThe Elephant Hotel is a National Historic Landmark located in Somers, New York, a town in Westchester County, New York, USA. It is a contributing property to the Somers Hamlet Historic District....
.
Early roads
The southernmost section of NY 100 known as "Central Park Avenue" appeared in maps by 1888. It was constructed as a
plank roadA plank road or puncheon is a dirt path or road covered with a series of planks, similar to the wooden sidewalks one would see in a Western movie. Plank roads were wildly popular in Ontario, the U.S. Northeast and U.S. Midwest in the first half of the 19th century...
in 1874 connecting
Macombs Dam BridgeMacombs Dam Bridge is a swing bridge that spans the Harlem River in New York City, connecting the boroughs of Manhattan and the Bronx near Yankee Stadium. It is the third-oldest bridge in New York City and was designated an official landmark in January 1992...
(then known as Central Bridge) to Westchester County. The road continues south into the Bronx as
Jerome AvenueJerome Avenue is one of the longest thoroughfares in the New York City borough of the Bronx, New York, United States. The road is 5.6 miles long and stretches from Highbridge general area to Woodlawn. Both of these termini are with the Major Deegan Expressway which runs parallel to the west. The...
, which was originally also called Central Park Avenue.
The middle section of NY 100 uses the Saw Mill River Road, an early colonial road connecting many different hamlets and villages in Westchester County. It follows along the path of various rivers and brooks as it winds its way to the north of the county. The road is now used as parts of several state routes, including NY 9A, NY 100, and NY 118. The section used by NY 100 follows the path of the Pocantico River between the hamlets of
HawthorneHawthorne is an unincorporated hamlet and census-designated place located in the town of Mount Pleasant in Westchester County, New York. The population was 5,083 at the 2000 census.-History:...
and
MillwoodMillwood is a hamlet located in the town of New Castle, New York in Westchester County. It was originally settled as Sarlesville. The area now known as Millwood appears on 19th century maps as Merritt's Corners and Rockdale Mills...
.
The northernmost section of NY 100 runs along a part of the "Croton Turnpike", an early private toll road that was chartered in 1807. The Croton Turnpike connects the village of
OssiningOssining is a village in Westchester County, New York, United States. The population was 24,010 at the 2000 census. As a village, it is located in the Town of Ossining.-Geography:Ossining borders the eastern shores of the widest part of the Hudson River....
(then called Sing Sing) to the hamlet of
SomersSomers is a town located in northeastern Westchester County, New York, United States. As of the 2000 census, the town had a total population of 18,346...
via Kitchawan. The road was made free in 1849. The Saw Mill River Road was rerouted to overlap the Croton Turnpike as it navigates around and across the
Croton ReservoirCroton Reservoir can refer to:* Croton Distributing Reservoir: completed in 1842 and demolished in 1899.* New Croton Reservoir: completed in 1905 and still in service....
, which was constructed between 1837 and 1842.
Designation
NY 100 was first designated in the 1930 state highway renumbering, when many of the state roads in Westchester County were first publicly posted with route numbers. Originally, it went beyond its current northern terminus (at US 202 in
SomersSomers is a town located in northeastern Westchester County, New York, United States. As of the 2000 census, the town had a total population of 18,346...
) and continued further north along the
Croton Turnpike to end at NY 22 in Croton Falls. In 1934, US 202 was designated and overlapped with NY 100 up to NY 22. The overlap lasted as late as 1990. NY 100 was cut back to end at US 202 in Somers by 2004.
In December 1934, at the insistence of the Autombile Club of New York, several numbered routes were extended and signed within
New York CityNew York is the most populous city in the United States, and the center of the New York metropolitan area, which is among the most populous urban areas in the world. A leading global city, New York exerts a powerful influence over worldwide commerce, finance, culture, fashion and entertainment...
, with NY 100 being one of these routes. NY 100 was extended south from the Yonkers line in the Bronx along
Jerome AvenueJerome Avenue is one of the longest thoroughfares in the New York City borough of the Bronx, New York, United States. The road is 5.6 miles long and stretches from Highbridge general area to Woodlawn. Both of these termini are with the Major Deegan Expressway which runs parallel to the west. The...
to the
Grand ConcourseThe Grand Boulevard and Concourse is a major thoroughfare in the borough of the Bronx in New York City...
. NY 100 crossed into Manhattan via East 149th Street and the
145th Street BridgeThe 145th Street Avenue Bridge, located in New York City, USA, is a four-lane swing bridge that crosses the Harlem River, connecting 145th Street and Lenox Avenue in Manhattan with East 149th Street and River Avenue in the Bronx. It once carried northbound New York State Route 22 and New York State...
. In Manhattan, NY 100 continued south along Lenox Avenue,
110th Street110th Street is a street in the New York City borough of Manhattan. It is commonly known as the boundary between Harlem and Central Park, along which it is known as Central Park North. In the west, it is also known as Cathedral Parkway....
, Fifth Avenue,
96th Street96th Street is a major two-way street in East Harlem and the Upper West Side, which is a part of the New York City borough of Manhattan, running from the East River at the FDR Drive to the Henry Hudson Parkway at the Hudson River...
, and
Park AvenuePark Avenue is a wide boulevard that carries north and southbound traffic in New York City borough of Manhattan. Throughout most of its length, it runs parallel to Madison Avenue to the west and Lexington Avenue to the east....
, ending at
Houston StreetHouston Street is a major east-west thoroughfare in downtown Manhattan. It runs crosstown across the full width of the borough of Manhattan, from Pier 40 on the Hudson River, through the Port Authority Truck Terminal on Greenwich Street, to the East River, and serves as the boundary between the...
(NY 1A). South of
Fordham RoadFordham Road is a major street in The Bronx borough of New York City. It is also the location of the longest retail strip in the borough of the Bronx. It runs through east-west from the Harlem River to Bronx Park. This street runs through the neighborhood of University Heights, divides Fordham from...
, NY 100 was overlapped with NY 22 all the way to Houston Street.
With the opening of the
Major Deegan ExpresswayThe Major William Francis Deegan Expressway is an 8.4 mile part of Interstate 87 in the New York City, borough of The Bronx. The Major Deegan, begins at I-278 at the interchange of the Bruckner Expressway & the Robert F. Kennedy Bridge, formerly the Triboro Bridge...
in 1956, the NY 100 designation was removed from
New York CityNew York is the most populous city in the United States, and the center of the New York metropolitan area, which is among the most populous urban areas in the world. A leading global city, New York exerts a powerful influence over worldwide commerce, finance, culture, fashion and entertainment...
. NY 100 was cut back to the city line again. No major changes have been made to the NY 100 alignment since then. However, as of 2007, NYSDOT recognizes the
Cross County ParkwayThe Cross County Parkway is a long parkway in Westchester County, New York. The parkway is a critical east-west connection throughout Westchester, having full interchanges with every major north-south parkway in southern Westchester, in addition to the New York State Thruway mainline. The western...
underpass as the official southern terminus of NY 100.
Expressway plans
In April 1956, the Westchester County Planning Commission recommended that a new expressway should be built along the current NY 100 north of White Plains. The road was to be an extension of the Central Corridor Expressway, which was proposed as
New York State Route 125New York State Route 125 is a long north/south state highway in Westchester County, New York. The route begins in The Town of Mamaroneck at U.S...
. This extension was stretch to
Putnam CountyPutnam County is a county located in the U.S. state of New York, in the lower Hudson River Valley. Putnam county formed in 1812, when it detached from Dutchess County. , the population was 100,570. It is part of the New York Metropolitan Area. The county seat is Carmel...
. The area was a high-priority corridor, stretching from the
Cross-Westchester ExpresswayThe Cross Westchester Expressway is the name given to the part of Interstate 287 which runs from the Interstate 87/287 interchange in the town of Greenburgh to I-287's eastern terminus at Interstate 95 near the Rye-Port Chester boundary...
(I-287) to the proposed Northern Westchester Expressway (NY 35). North of NY 35, the area was a medium-priority corridor, ending at
U.S. Route 6U.S. Route 6 is a part of the U.S. Highway System that runs from Bishop, California, to Provincetown, Massachusetts. In New York, US 6 extends from the Pennsylvania state line at Port Jervis to the Connecticut state line east of Brewster...
in Mahopac. This plan was not implemented.
Suffixed routes
- NY 100A
New York State Route 100A is a long loop route of New York State Route 100 in the town of Greenburgh . It starts in the hamlet of Hartsdale and ends in the community of Grasslands at the boundary between the towns Greenburgh and Mount Pleasant.-Route description:NY 100A splits from NY 100 along...
is an alternate route of NY 100 through GreenburghGreenburgh is a town in the western part of Westchester County, New York, United States. The population was 86,764 at the 2000 census. Paul J. Feiner has been Town Supervisor since 1991.-Geography:...
.
- NY 100B
New York State Route 100B is a long spur route of New York State Route 100 in the southern part of the town of Greenburgh . The route is a connector from 9A to 119, and does not connect to NY 100 at all. The route was assigned in the 1930 renumbering along Dobbs Ferry Road.-Route description:NY...
is a spur off NY 119New York State Route 119 is a state highway in Westchester County. The road starts in Tarrytown at U.S. Route 9 and comes to an end at an intersection with New York State Route 22 in White Plains...
in Greenburgh. Although the route does not intersect NY 100, it meets NY 100A and terminates at NY 119 roughly from where NY 119 meets NY 100.
- NY 100C
New York State Route 100C is a long spur route of New York State Route 100 running along the Greenburgh–Mount Pleasant town line. The eastern terminus is at the northern junction of NY 100 and NY 100A. The western terminus as at NY 9A . NY 100C has a junction with the Sprain Brook Parkway...
is a spur off NY 100 in Greenburgh and Mount PleasantMount Pleasant is a town in Westchester County, New York, in the United States. As of the 2000 census, the town population was 43,221.-Geography:...
.
Major intersections
External links