County routes in Nassau County, New York are maintained by the Nassau County Department of Public Works. Route numbers were originally posted in 1958 on unique blue-on-orange pentagonal route markers, which reflected the county's official colors; however, all county route signage was removed in the mid-1970s after the Federal Highway Administration enacted new standards for county route markers in 1973. The county legislature refused to allocate funds to replace the signs with new markers conforming to the federal government's Manual on Uniform Traffic Control Devices, leaving the routes unsigned. The route numbers are still used by the county for internal purposes only.
County route designations in Nassau County are of two types: some routes are numbered, while others feature a letter followed by a number for their designations.
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Numbered routes Route numbers, lengths, and termini are derived from the New York State Department of Transportation's county road listing for Nassau County, unless otherwise noted.
Route Length(mi) Length(km) From Via To Notes Peninsula Boulevard (CR 2) in Hempstead Clinton Street, Clinton Road, Glen Cove RoadNorth Hempstead-Oyster Bay border, Greenvale Becomes NY 900B on the north side of the North Hempstead-Oyster Bay border. Formerly extended north to Centre Island Road in Centre Island and south to Lido Boulevard in Point Lookout. Bay Boulevard (CR 2A) / Rockaway Turnpike (CR 257) in Cedarhurst Peninsula Boulevard Fulton Street (NY 24/CR 107) in Hempstead Nassau Expressway (NY 878) in Inwood Bay Boulevard Peninsula Boulevard (CR 2)/Rockaway Turnpike (CR 257) in Cedarhurst Merrick Road (CR 27) in Merrick Merrick Avenue, Post Avenue, Post Road Wheatley Road (CR E60) in Old WestburyFormerly extended to Chicken Valley Road (CR C39) in Matinecock. Front Street in Hempstead village Franklin Avenue, North Franklin Street Old Country Road (CR 25) in Garden CityFormerly part of CR 6. Hempstead Turnpike (NY 24) in Franklin Square New Hyde Park Road I-495 exit 34 in North HillsFormerly part of CR 5, prior to the modification of the route.7.1611.52Peninsula Boulevard (CR 2) in Hempstead villageWashington Avenue, Roslyn Road, Main Street, Old Northern BoulevardOld Northern Boulevard (CR D71) and West Shore Road (CR 15) in RoslynFormerly CR 7, travelling between Freeport and Glen Cove. Additionally, CR 7A overlaps with CR D71 at its northern end in Roslyn.4.487.21Broadway (CR C21) in FreeportNorth Main Street, Nassau Road, Greenwich StreetFront Street in Hempstead village Old Country Road (CR 25) in Garden City Herricks Road, Shelter Rock Road NY 25A (Northern Boulevard) in Manhasset South Broadway (NY 107) in Bethpage South Oyster Bay Road, Jackson Avenue, Berry Hill Road NY 25A (North Hempstead Turnpike) in Oyster Bay CoveFormerly extended to West Main Street (CR E52) in Oyster Bay Jericho Turnpike (NY 25) in New Hyde Park Lakeville Road, Middle Neck Road Kings Point Road in Kings PointFormerly included Redbrook Road. I-495 Exit 33 in Lake Success Community Drive Northern Boulevard (NY 25A) and East Shore Road (CR E25) in ManhassetFormerly extended from I-495 Exit 33 in Lake Success to Bayview Avenue in Great Neck. Cantiague Lane in HicksvilleWest John Street, East Barclay Street, Woodbury Road Suffolk County line in WoodburyFormerly extended west to Roslyn Road (CR 7A) in Mineola. Old Northern Boulevard (CR D71; CR 7A) in Roslyn West Shore Road, Beacon Hill Road Port Washington Boulevard (NY 101) in Port WashingtonFormerly extended west and north to Manorhaven via Main Street, Shore Road, Manorhaven Boulevard, and Orchard Beach Road. The Plaza in Atlantic Beach Beech Street, Park Street Long Beach city line at Nevada Avenue in East Atlantic Beach Herricks Road (CR 8) at Rockaway Avenue in Garden City Herricks Road, Old Country Road, Round Swamp Road Round Swamp Road (CR 110) in PlainviewOverlaps with Round Swamp Road east to the Nassau–Suffolk County border. Round Swamp Road (CR 110) Old Country Road Connector in Plainview Old Country Road (CR 25) Merrick Road (CR 27) in Bellmore Bellmore Avenue Merrick Avenue (CR 4) in East Meadow New York City (Queens) line at Hook Creek Boulevard in Valley Stream Merrick Road Suffolk County line in East Massapequa (becomes Montauk Highway) Overlaps with NY 27A east of Carman Mill Road. Atlantic Avenue in Baldwin Grand Avenue, Baldwin Road Jerusalem Avenue (CR 105) in Hempstead Post Avenue (CR 4) in Westbury Union Avenue, Brush Hollow Road Jericho Turnpike (NY 25) and Cantiague Rock Road (CR C29) in Jericho 1.04 1.67Broadway (CR 22) in LawrenceDoughty BoulevardBurnside Avenue (CR C27) in Inwood0.691.11Railroad tracks at the East Williston–Williston Park village lineEast Williston Avenue in East WillistonEast Williston–Mineola village lineEntire length overlaps with NY 25B; formerly designated as CR 25B. Herricks Road (CR 8) in Herricks Searingtown RoadNY 25A /NY 101 at the Flower Hill–Manhasset–Munsey Park–Roslyn Estates quadripointHistorically known as Searington Road and Manhasset Avenue. Greenwich Street (CR 7B) in Hempstead village Jerusalem AvenueNY 105 / NY 106 in North Bellmore1.302.09NY 24 (Fulton Avenue) and CR 3 (Hempstead Avenue) in West HempsteadFront StreetWilliam Street in Hempstead villageEntire length overlaps with NY 102.0.91.45Franklin Avenue (CR 5A) in HempsteadFulton AvenueTruro Lane in HempsteadOverlaps with NY 24; formerly designated CR 24.Quaker Meeting House Road (CR D99) in Old Bethpage Round Swamp RoadSuffolk County line in Plainview Covert Avenue (CR C52) in Stewart Manor Stewart Avenue Merrick Avenue (CR 4) in East Meadow Jerusalem Avenue (CR 105) in North Merrick North Jerusalem Road, Old Jerusalem Road Wantagh Avenue (CR 189) in Wantagh2.033.27Southern State Parkway at the Roosevelt–Uniondale borderUniondale Avenue in UniondaleHempstead Turnpike (NY 24) Merrick Road (CR 27) in Wantagh Wantagh Avenue NY 107 in Bethpage Formerly NY 115 from 1930 to July 1, 1972. 3.91 6.29 Long Beach Boulevard in Long Beach Park Street, Lido BoulevardParkside Drive in Point Lookout Broadway (CR C22) in Lawrence Rockaway Turnpike New York City (Queens) line in InwoodFormerly part of NY 104 from c. 1931 to c. 1933 Meadowbrook State Parkway Zeckendorf Boulevard in East Garden City (Uniondale) Old Country Road (CR 25)CR 878T0.570.92Rockaway Turnpike (CR 257) in InwoodNassau Expressway Tem.Burnside Avenue (CR C27) in Inwood
Lettered routes This list of county routes (derived from the New York State Department of Transportation's county road listing for Nassau County) have designations that begin with a letter, followed by a number.