New York State Route 24
Encyclopedia
New York State Route 24 (NY 24) is an east–west state highway
on Long Island
in New York
in the United States. The route is split into two segments, with the longest and westernmost of the two extending from Interstate 295
(I-295, named the Clearview Expressway) and NY 25
(Hillside Avenue) in the Queens Village section of the New York City borough
of Queens to NY 110
in East Farmingdale
in the Suffolk County
town of Babylon
. The shorter eastern section, located in eastern Suffolk County, runs from I-495
in Calverton
to County Route 80 (CR 80) in Hampton Bays
.
NY 24 is one of three routes in New York that is split into two segments. The other two are NY 42
in the Catskills and NY 878
in Queens
and Nassau County
. Like NY 42, NY 24 was once a continuous route.
and I-295
in the New York City
borough of Queens
. NY 24 is unsigned for its first half-mile or so in Queens as one-way couplets via Hollis Court Boulevard and 212th Street. It then follows Jamaica Avenue for a block before turning onto Hempstead Avenue, where signage begins. Upon crossing the Nassau County
line it becomes Hempstead Turnpike, one of the major thoroughfares of the county. It runs through many communities in the towns of Hempstead
and Oyster Bay
, among them the villages of Hempstead
and Farmingdale
and the hamlets of Elmont
(accessing Belmont Racetrack
along the way), East Meadow
, and Levittown
(as it runs through some of these towns it takes on the name Hempstead-Bethpage Turnpike). It ends shortly after entering Suffolk County
at NY 110
just north of Republic Airport
in Babylon
.
In Farmingdale the turnpike becomes Fulton Street, then changes into Conklin Street at the junction with NY 109
. Ironically, the one place between the Nassau/Queens border and the Bethpage
/Farmingdale border in which the strip is not known as Hempstead Turnpike is when it is surrounded by the Village of Hempstead itself, where it is Fulton Avenue (though some street signs incorrectly designate it as Fulton Street). Nationally-known Hofstra University
, which straddles Fulton Avenue and occupies land in both Hempstead Village and the hamlet of Uniondale
, uses the address 1000 Fulton Avenue.
The eastern section begins some forty miles to the east, still in Suffolk County, at exit 71 of I-495
in a rural section of the town of Brookhaven
in Calverton
. It overlaps CR 94
and is county maintained for several miles, passing several Suffolk County offices and a county jail just outside Riverhead in the neighboring town of Southampton
. After a traffic circle just outside downtown Riverhead, NY 24 drops the CR 94 designation, although it doubles as the western terminus of New York State Bicycle Route 24. It continues southeast from Riverhead, first through the area known as Flanders
, and then through Sears Bellows County Park, now home to Long Island's famed "Big Duck
" (which sits directly on NY 24). Right after NYS Bike Route 24 leaves NY 24 proper for Old Riverhead Road, the highway crosses NY 27
just before its terminus at CR 80 (Montauk Highway
) in Hampton Bays
.
limits and Hampton Bays
when it was assigned as part of the 1930 renumbering of state highways in New York. The route was extended into New York City in mid-December 1934. It entered the city on Hempstead Avenue and followed 212th Street, Hillside Avenue, and Queens Boulevard to Skillman Avenue (NY 25
). NY 24 joined NY 25 here, overlapping NY 25 (and NY 25A
west of Northern Boulevard) along Queens Boulevard and across the Queensboro Bridge
into Manhattan
. The three routes continued west for several more blocks along 2nd Avenue and 57th Street
to Park Avenue
(then NY 22
and NY 100
), where NY 24, NY 25, and NY 25A all ended. The section of NY 24 between Farmingdale
and Riverhead
was removed ca. 1936, splitting NY 24 into two pieces.
. The concurrency was reduced slightly in the mid-1940s, however, as NY 24 was rerouted to follow the Crosstown Connecting Highway (now the right-of-way of I-278
) and Midtown Highway (I-495
) to the Queens–Midtown Tunnel. It then continued through the tunnel to end at NY 1A
in Manhattan
. The Crosstown Connection Highway and the Midtown Highway were upgraded into the first portions of the Brooklyn–Queens Expressway (BQE) and the Queens Midtown Expressway, respectively, in the early 1950s. At the time, the Queens Midtown Expressway ended at 61st Street.
By 1956, the highway had been renamed the Long Island Expressway (LIE) and extended east to Queens Boulevard. Although NY 24 intersected the highway twice—where it left the LIE at the BQE and at Queens Boulevard—NY 24 still followed the BQE and Queens Boulevard. The portion of the LIE from Queens Boulevard to the Northern State Parkway
(now exit 38) was completed in the late 1950s, at which time NY 24 was rerouted to follow the LIE between Manhattan and East Hills
. The original routing of NY 24 from the BQE to Farmingdale was then redesignated as NY 24A. However, unlike NY 24 before it, NY 24A left NY 25 at the junction of Queens Boulevard and Hillside Avenue and followed Queens Boulevard and Jamaica Avenue through Queens. The portion of NY 24 from Manhattan to the Clearview Expressway was co-signed as I-495 by 1960.
NY 24 was removed from the LIE and shifted southward to replace NY 24A ca. 1962. However, NY 24 was truncated to begin at the LIE instead. On January 1, 1970, NY 24 was truncated again to the junction of Queens Boulevard and Hillside Avenue. This eliminated its overlap with NY 25, which was altered to follow NY 24's former routing through Queens. NY 24 was rerouted once more between 1977 and 1981 to follow 212th Street once again to end at NY 25 and I-295
.
following the course of the Peconic River
. The roadway began at the Long Island Expressway and ended just south of Riverhead. This segment of NY 24 is maintained by Suffolk County
and is co-signed
as CR 94
.
In the 1960s, there was a proposal to build a bypass around the current eastern terminus of the western segment of NY 24. The highway, named the "Republic Bypass", would begin at NY 24 midway between the Nassau
–Suffolk County line and NY 110
and would parallel Conklin Street along its north side to Wellwood Avenue, where the bypass would merge with Long Island Avenue. The bypass was part of a plan to re-link the western and eastern segments. Other proposed extensions built by Suffolk County were Suffolk Avenue (CR 100), Furrows Road, Peconic Avenue, and the formerly proposed Central Suffolk Highway (CR 90). The right-of-way for the Central Suffolk Highway can be found beneath the bridge carrying CR 101 bridge over the main line of the Long Island Rail Road
.
|colspan=4 style="text-align:center"|Gap in designation
State highway
State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...
on Long Island
Long Island
Long Island is an island located in the southeast part of the U.S. state of New York, just east of Manhattan. Stretching northeast into the Atlantic Ocean, Long Island contains four counties, two of which are boroughs of New York City , and two of which are mainly suburban...
in New York
New York
New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...
in the United States. The route is split into two segments, with the longest and westernmost of the two extending from Interstate 295
Interstate 295 (New York)
Interstate 295 is a connector route within New York City. Measuring 9.10 miles in length, I-295 travels from the Bruckner Interchange, a junction with I-95/I-278/I-678 in The Bronx, across the toll Throgs Neck Bridge to the Grand Central Parkway in Queens...
(I-295, named the Clearview Expressway) and NY 25
New York State Route 25
New York State Route 25 is an east–west state highway in downstate New York in the United States. The route extends for just over from east midtown Manhattan in New York City to the Cross Sound Ferry terminal at Orient Point on the end of Long Island's North Fork...
(Hillside Avenue) in the Queens Village section of the New York City borough
Borough (New York City)
New York City, one of the largest cities in the world, is composed of five boroughs. Each borough now has the same boundaries as the county it is in. County governments were dissolved when the city consolidated in 1898, along with all city, town, and village governments within each county...
of Queens to NY 110
New York State Route 110
New York State Route 110 is a major north–south state highway along the western border of Suffolk County, New York. It runs between the Village of Amityville in the Town of Babylon and Halesite in the Town of Huntington...
in East Farmingdale
East Farmingdale, New York
East Farmingdale is a hamlet and a census-designated place in Suffolk County, New York, United States. The population of the CDP was 5,400 at the 2000 census...
in the Suffolk County
Suffolk County, New York
Suffolk County is a county located in the U.S. state of New York on the eastern portion of Long Island. As of the 2010 census, the population was 1,493,350. It was named for the county of Suffolk in England, from which its earliest settlers came...
town of Babylon
Babylon (town), New York
The Town of Babylon is one of ten towns in Suffolk County, New York . Located on Long Island, the town population was 211,792 as of the 2000 census. There is also a Village of Babylon located within the town. It borders Nassau County to the West, and the Atlantic Ocean to the South...
. The shorter eastern section, located in eastern Suffolk County, runs from I-495
Interstate 495 (New York)
Interstate 495 is an auxiliary Interstate Highway on Long Island in New York in the United States. The route extends for from the western portal of the Queens-Midtown Tunnel in the New York City borough of Manhattan to County Route 58 in Riverhead, Suffolk County...
in Calverton
Calverton, New York
Calverton is a hamlet in Suffolk County, New York, United States. The population was 5,704 at the 2000 census.The community is on the border of the Town of Riverhead and the Town of Brookhaven.-History:...
to County Route 80 (CR 80) in Hampton Bays
Hampton Bays, New York
Hampton Bays is a hamlet in Suffolk County, New York, United States. The population was 12,236 at the 2000 census.Hampton Bays is in the Town of Southampton.-Geography:...
.
NY 24 is one of three routes in New York that is split into two segments. The other two are NY 42
New York State Route 42
New York State Route 42 is a north–south, discontinuous state highway in the Catskill Mountains region of New York in the United States. The southernmost of the highway's two segments begins at an intersection with U.S. Route 6 and US 209 in Port Jervis and ends at a junction with...
in the Catskills and NY 878
New York State Route 878
New York State Route 878 is a state highway in the U.S. state of New York, forming the Nassau Expressway. The route exists in two sections connected by Rockaway Boulevard and Rockaway Turnpike, maintained in part by New York City, the New York State Department of Transportation , and Nassau...
in Queens
Queens
Queens is the easternmost of the five boroughs of New York City. The largest borough in area and the second-largest in population, it is coextensive with Queens County, an administrative division of New York state, in the United States....
and Nassau County
Nassau County, New York
Nassau County is a suburban county on Long Island, east of New York City in the U.S. state of New York, within the New York Metropolitan Area. As of the 2010 census, the population was 1,339,532...
. Like NY 42, NY 24 was once a continuous route.
Route description
Western segment
NY 24 begins at NY 25New York State Route 25
New York State Route 25 is an east–west state highway in downstate New York in the United States. The route extends for just over from east midtown Manhattan in New York City to the Cross Sound Ferry terminal at Orient Point on the end of Long Island's North Fork...
and I-295
Interstate 295 (New York)
Interstate 295 is a connector route within New York City. Measuring 9.10 miles in length, I-295 travels from the Bruckner Interchange, a junction with I-95/I-278/I-678 in The Bronx, across the toll Throgs Neck Bridge to the Grand Central Parkway in Queens...
in the New York City
New York City
New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...
borough of Queens
Queens
Queens is the easternmost of the five boroughs of New York City. The largest borough in area and the second-largest in population, it is coextensive with Queens County, an administrative division of New York state, in the United States....
. NY 24 is unsigned for its first half-mile or so in Queens as one-way couplets via Hollis Court Boulevard and 212th Street. It then follows Jamaica Avenue for a block before turning onto Hempstead Avenue, where signage begins. Upon crossing the Nassau County
Nassau County, New York
Nassau County is a suburban county on Long Island, east of New York City in the U.S. state of New York, within the New York Metropolitan Area. As of the 2010 census, the population was 1,339,532...
line it becomes Hempstead Turnpike, one of the major thoroughfares of the county. It runs through many communities in the towns of Hempstead
Town of Hempstead, New York
Hempstead is one of the three towns in Nassau County, New York, United States, occupying the southwest part of the county. There are twenty-two incorporated villages completely or partially in the town. Hempstead's combined population was 759,757 at the 2010 Census, the majority of the population...
and Oyster Bay
Oyster Bay (town), New York
The Town of Oyster Bay is easternmost of the three towns in Nassau County, New York, in the United States. Part of the New York metropolitan area, it is the only town in Nassau County that extends from the North Shore to the South Shore of Long Island. As of the 2010 census, the town population was...
, among them the villages of Hempstead
Hempstead (village), New York
Hempstead is a village located in the town of Hempstead, Nassau County, New York, United States. The population was 53,891 at the 2010 census.Hofstra University is located on the border between Hempstead and Uniondale.-Foundation:...
and Farmingdale
Farmingdale, New York
The Village of Farmingdale is an incorporated village on Long Island within the Town of Oyster Bay in Nassau County, New York in the United States...
and the hamlets of Elmont
Elmont, New York
Elmont is an unincorporated census-designated place located in the northwest corner of the Town of Hempstead in Nassau County, New York, along its border with the borough of Queens in New York City...
(accessing Belmont Racetrack
Belmont Park
Belmont Park is a major thoroughbred horse-racing facility located in Elmont in the Town of Hempstead in Nassau County, New York, on Long Island adjoining New York City. It first opened on May 4, 1905...
along the way), East Meadow
East Meadow, New York
East Meadow is a hamlet in Nassau County , New York, United States. East Meadow is an unincorporated area in the Town of Hempstead....
, and Levittown
Levittown, New York
Levittown is a hamlet in the Town of Hempstead located on Long Island in Nassau County, New York. Levittown is midway between the villages of Hempstead and Farmingdale. As of the 2010 census, the CDP had a total population of 51,881....
(as it runs through some of these towns it takes on the name Hempstead-Bethpage Turnpike). It ends shortly after entering Suffolk County
Suffolk County, New York
Suffolk County is a county located in the U.S. state of New York on the eastern portion of Long Island. As of the 2010 census, the population was 1,493,350. It was named for the county of Suffolk in England, from which its earliest settlers came...
at NY 110
New York State Route 110
New York State Route 110 is a major north–south state highway along the western border of Suffolk County, New York. It runs between the Village of Amityville in the Town of Babylon and Halesite in the Town of Huntington...
just north of Republic Airport
Republic Airport
Republic Airport is a state-owned public-use airport located in East Farmingdale, Suffolk County, New York, United States. The airport is on Long Island, one mile east of the central business district of Farmingdale....
in Babylon
Babylon (town), New York
The Town of Babylon is one of ten towns in Suffolk County, New York . Located on Long Island, the town population was 211,792 as of the 2000 census. There is also a Village of Babylon located within the town. It borders Nassau County to the West, and the Atlantic Ocean to the South...
.
In Farmingdale the turnpike becomes Fulton Street, then changes into Conklin Street at the junction with NY 109
New York State Route 109
New York State Route 109 , also known as the Babylon–Farmingdale Turnpike, is a four-lane state highway on Long Island in New York in the United States. It runs from Farmingdale in the Nassau County town of Oyster Bay to the village of Babylon in Suffolk County...
. Ironically, the one place between the Nassau/Queens border and the Bethpage
Bethpage, New York
Bethpage is a hamlet located on Long Island within the Town of Oyster Bay in Nassau County, New York, United States, as well as a census-designated place with borders slightly different from those of the hamlet...
/Farmingdale border in which the strip is not known as Hempstead Turnpike is when it is surrounded by the Village of Hempstead itself, where it is Fulton Avenue (though some street signs incorrectly designate it as Fulton Street). Nationally-known Hofstra University
Hofstra University
Hofstra University is a private, nonsectarian institution of higher learning located in the Village of Hempstead, New York, United States, about east of New York City: less than an hour away by train or car...
, which straddles Fulton Avenue and occupies land in both Hempstead Village and the hamlet of Uniondale
Uniondale, New York
Uniondale is a hamlet as well as a suburb of New York City in Nassau County, New York, United States, on Long Island, in the Town of Hempstead. The population was 24,759 at the 2010 United States Census.-Geography:...
, uses the address 1000 Fulton Avenue.
Eastern segment
Interstate 495 (New York)
Interstate 495 is an auxiliary Interstate Highway on Long Island in New York in the United States. The route extends for from the western portal of the Queens-Midtown Tunnel in the New York City borough of Manhattan to County Route 58 in Riverhead, Suffolk County...
in a rural section of the town of Brookhaven
Brookhaven, New York
The Town of Brookhaven is one of the ten towns into which Suffolk County, New York, United States, has been divided. Part of the New York metropolitan area, it is located in central Suffolk County and is the only town in the county that stretches from the North Shore to the South Shore of Long...
in Calverton
Calverton, New York
Calverton is a hamlet in Suffolk County, New York, United States. The population was 5,704 at the 2000 census.The community is on the border of the Town of Riverhead and the Town of Brookhaven.-History:...
. It overlaps CR 94
County Route 94 (Suffolk County, New York)
Suffolk County Road 94 is a county-maintained segment of New York State Route 24 between Calverton, and Riverhead, New York. It runs from the Long Island Expressway at exit 71 and the traffic circle at Suffolk County Road 104...
and is county maintained for several miles, passing several Suffolk County offices and a county jail just outside Riverhead in the neighboring town of Southampton
Southampton (town), New York
The Town of Southampton is located in southeastern Suffolk County, New York, U.S., partly on the South Fork of Long Island. As of the United States 2000 Census, the town had a total population of 54,712...
. After a traffic circle just outside downtown Riverhead, NY 24 drops the CR 94 designation, although it doubles as the western terminus of New York State Bicycle Route 24. It continues southeast from Riverhead, first through the area known as Flanders
Flanders, New York
Flanders is a hamlet in Suffolk County, New York, United States. The population was 3,646 at the 2000 census. It is the location of the Big Duck.It is located on the south side of the Peconic River at its mouth in Peconic Bay...
, and then through Sears Bellows County Park, now home to Long Island's famed "Big Duck
Big Duck
The Big Duck is a ferrocement building in the shape of a duck located in Flanders, New York, on Long Island. It was originally built in 1931 by duck farmer Martin Maurer in nearby Riverhead, and used as a shop to sell ducks and duck eggs. It was added to the National Register of Historic Places in...
" (which sits directly on NY 24). Right after NYS Bike Route 24 leaves NY 24 proper for Old Riverhead Road, the highway crosses NY 27
New York State Route 27
New York State Route 27 is an east–west long state highway extending from Interstate 278 in the New York City borough of Brooklyn to Montauk Point State Park on Long Island, New York, United States...
just before its terminus at CR 80 (Montauk Highway
Montauk Highway
Montauk Highway is one of the original through highways of Long Island, New York, extending from Jamaica, in the New York City borough of Queens to Montauk Point in Suffolk County, a distance of approximately 100 miles ....
) in Hampton Bays
Hampton Bays, New York
Hampton Bays is a hamlet in Suffolk County, New York, United States. The population was 12,236 at the 2000 census.Hampton Bays is in the Town of Southampton.-Geography:...
.
History
NY 24 was originally a continuous route between the New York CityNew York City
New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...
limits and Hampton Bays
Hampton Bays, New York
Hampton Bays is a hamlet in Suffolk County, New York, United States. The population was 12,236 at the 2000 census.Hampton Bays is in the Town of Southampton.-Geography:...
when it was assigned as part of the 1930 renumbering of state highways in New York. The route was extended into New York City in mid-December 1934. It entered the city on Hempstead Avenue and followed 212th Street, Hillside Avenue, and Queens Boulevard to Skillman Avenue (NY 25
New York State Route 25
New York State Route 25 is an east–west state highway in downstate New York in the United States. The route extends for just over from east midtown Manhattan in New York City to the Cross Sound Ferry terminal at Orient Point on the end of Long Island's North Fork...
). NY 24 joined NY 25 here, overlapping NY 25 (and NY 25A
New York State Route 25A
New York State Route 25A is a state highway on Long Island in New York in the United States. It serves as the main east–west route for most of the North Shore of Long Island, running from the Queens Midtown Tunnel in the New York City borough of Queens at its western terminus to...
west of Northern Boulevard) along Queens Boulevard and across the Queensboro Bridge
Queensboro Bridge
The Ed Koch Queensboro Bridge, also known as the 59th Street Bridge – because its Manhattan end is located between 59th and 60th Streets – or simply the Queensboro Bridge, is a cantilever bridge over the East River in New York City that was completed in 1909...
into Manhattan
Manhattan
Manhattan is the oldest and the most densely populated of the five boroughs of New York City. Located primarily on the island of Manhattan at the mouth of the Hudson River, the boundaries of the borough are identical to those of New York County, an original county of the state of New York...
. The three routes continued west for several more blocks along 2nd Avenue and 57th Street
57th Street (Manhattan)
57th Street is one of New York City's major east-west thoroughfares, which runs east-west in the Midtown section of the borough of Manhattan, from the New York City Department of Sanitation's dock on the Hudson River at the West Side Highway to a small park overlooking the East River built on a...
to Park Avenue
Park Avenue (Manhattan)
Park Avenue is a wide boulevard that carries north and southbound traffic in New York City borough of Manhattan. Through most of its length, it runs parallel to Madison Avenue to the west and Lexington Avenue to the east....
(then NY 22
New York State Route 22
New York State Route 22 is a north–south state highway in eastern New York in the United States. It runs parallel to the state's eastern edge from the outskirts of New York City to a short distance south of the Canadian border. At , it is the state's longest north–south route and...
and NY 100
New York State Route 100
New York State Route 100 is a major north–south state highway in Westchester County, New York, in the United States. It begins parallel to Interstate 87 at a junction with the Cross County Parkway in the city of Yonkers and runs through most of the length of the county via the city of...
), where NY 24, NY 25, and NY 25A all ended. The section of NY 24 between Farmingdale
Farmingdale, New York
The Village of Farmingdale is an incorporated village on Long Island within the Town of Oyster Bay in Nassau County, New York in the United States...
and Riverhead
Riverhead (CDP), New York
Riverhead is a census-designated place roughly corresponding to the hamlet by the same name located in the town of Riverhead in Suffolk County, New York on Long Island...
was removed ca. 1936, splitting NY 24 into two pieces.
New York City and vicinity
The overlap with NY 25 was extended twice over the next decade. In the late 1930s, NY 25 was realigned to follow Queens Boulevard (NY 24) from Skillman Avenue to Horace Harding Boulevard. It was altered again in the early 1940s to use the section of Queens Boulevard between Horace Harding Boulevard and Union TurnpikeUnion Turnpike (New York)
Union Turnpike is a thoroughfare stretching across central and eastern Queens in New York City. It runs from Myrtle Avenue in Glendale to Marcus Avenue in North New Hyde Park, about a mile into Nassau County, New York. Initially designed as a toll road, it takes a straight-arrow path from Kew...
. The concurrency was reduced slightly in the mid-1940s, however, as NY 24 was rerouted to follow the Crosstown Connecting Highway (now the right-of-way of I-278
Interstate 278
Interstate 278 is an auxiliary Interstate Highway in New Jersey and New York, United States. The road runs from U.S. Route 1/9 in Linden, New Jersey to the Bruckner Interchange in the New York City borough of the Bronx...
) and Midtown Highway (I-495
Interstate 495 (New York)
Interstate 495 is an auxiliary Interstate Highway on Long Island in New York in the United States. The route extends for from the western portal of the Queens-Midtown Tunnel in the New York City borough of Manhattan to County Route 58 in Riverhead, Suffolk County...
) to the Queens–Midtown Tunnel. It then continued through the tunnel to end at NY 1A
New York State Route 1A
New York State Route 1A was a state highway in New York City, running from the Holland Tunnel to U.S. Route 1 . It existed from 1934, when routes were first marked in New York City, until the 1960s.-History:...
in Manhattan
Manhattan
Manhattan is the oldest and the most densely populated of the five boroughs of New York City. Located primarily on the island of Manhattan at the mouth of the Hudson River, the boundaries of the borough are identical to those of New York County, an original county of the state of New York...
. The Crosstown Connection Highway and the Midtown Highway were upgraded into the first portions of the Brooklyn–Queens Expressway (BQE) and the Queens Midtown Expressway, respectively, in the early 1950s. At the time, the Queens Midtown Expressway ended at 61st Street.
By 1956, the highway had been renamed the Long Island Expressway (LIE) and extended east to Queens Boulevard. Although NY 24 intersected the highway twice—where it left the LIE at the BQE and at Queens Boulevard—NY 24 still followed the BQE and Queens Boulevard. The portion of the LIE from Queens Boulevard to the Northern State Parkway
Northern State Parkway
The Northern State Parkway is a long limited-access state parkway on Long Island in the U.S. state of New York. The western terminus is at the Queens-Nassau County line, where the parkway continues westward into New York City as the Grand Central Parkway...
(now exit 38) was completed in the late 1950s, at which time NY 24 was rerouted to follow the LIE between Manhattan and East Hills
East Hills, New York
East Hills is a village in Nassau County, New York on the North Shore of Long Island. It is considered part of the Greater Roslyn area, which is anchored by the Village of Roslyn...
. The original routing of NY 24 from the BQE to Farmingdale was then redesignated as NY 24A. However, unlike NY 24 before it, NY 24A left NY 25 at the junction of Queens Boulevard and Hillside Avenue and followed Queens Boulevard and Jamaica Avenue through Queens. The portion of NY 24 from Manhattan to the Clearview Expressway was co-signed as I-495 by 1960.
NY 24 was removed from the LIE and shifted southward to replace NY 24A ca. 1962. However, NY 24 was truncated to begin at the LIE instead. On January 1, 1970, NY 24 was truncated again to the junction of Queens Boulevard and Hillside Avenue. This eliminated its overlap with NY 25, which was altered to follow NY 24's former routing through Queens. NY 24 was rerouted once more between 1977 and 1981 to follow 212th Street once again to end at NY 25 and I-295
Interstate 295 (New York)
Interstate 295 is a connector route within New York City. Measuring 9.10 miles in length, I-295 travels from the Bruckner Interchange, a junction with I-95/I-278/I-678 in The Bronx, across the toll Throgs Neck Bridge to the Grand Central Parkway in Queens...
.
Suffolk County
In Riverhead, NY 24 initially had a brief overlap with the northernmost portion of NY 113 between Riverleigh Avenue (NY 113) and Main Street (NY 25), where both terminated. This concurrency was eliminated by 1970 as NY 113 was truncated to end at NY 24. In the early 1970s, NY 24 was extended westward along a new divided highwayDivided Highway
Divided Highway is a compilation album by American rock band The Doobie Brothers, released in 2003. . All tracks are taken from the albums Cycles and Brotherhood .-Track listing:...
following the course of the Peconic River
Peconic River
The Peconic River is a river in Long Island's Suffolk County, New York in the United States. The river is located in the eastern end of Long Island...
. The roadway began at the Long Island Expressway and ended just south of Riverhead. This segment of NY 24 is maintained by Suffolk County
Suffolk County, New York
Suffolk County is a county located in the U.S. state of New York on the eastern portion of Long Island. As of the 2010 census, the population was 1,493,350. It was named for the county of Suffolk in England, from which its earliest settlers came...
and is co-signed
Concurrency (road)
A concurrency, overlap, or coincidence in a road network is an instance of one physical road bearing two or more different highway, motorway, or other route numbers...
as CR 94
County Route 94 (Suffolk County, New York)
Suffolk County Road 94 is a county-maintained segment of New York State Route 24 between Calverton, and Riverhead, New York. It runs from the Long Island Expressway at exit 71 and the traffic circle at Suffolk County Road 104...
.
In the 1960s, there was a proposal to build a bypass around the current eastern terminus of the western segment of NY 24. The highway, named the "Republic Bypass", would begin at NY 24 midway between the Nassau
Nassau County, New York
Nassau County is a suburban county on Long Island, east of New York City in the U.S. state of New York, within the New York Metropolitan Area. As of the 2010 census, the population was 1,339,532...
–Suffolk County line and NY 110
New York State Route 110
New York State Route 110 is a major north–south state highway along the western border of Suffolk County, New York. It runs between the Village of Amityville in the Town of Babylon and Halesite in the Town of Huntington...
and would parallel Conklin Street along its north side to Wellwood Avenue, where the bypass would merge with Long Island Avenue. The bypass was part of a plan to re-link the western and eastern segments. Other proposed extensions built by Suffolk County were Suffolk Avenue (CR 100), Furrows Road, Peconic Avenue, and the formerly proposed Central Suffolk Highway (CR 90). The right-of-way for the Central Suffolk Highway can be found beneath the bridge carrying CR 101 bridge over the main line of the Long Island Rail Road
Long Island Rail Road
The Long Island Rail Road or LIRR is a commuter rail system serving the length of Long Island, New York. It is the busiest commuter railroad in North America, serving about 81.5 million passengers each year. Established in 1834 and having operated continuously since then, it is the oldest US...
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Major intersections
|-|colspan=4 style="text-align:center"|Gap in designation