[ Suffolk County Route Marker ]

Suffolk County routes are in most cases posted routes. There is no overall numbering pattern.

In addition to the county-maintained routes listed here, there are a number of unsigned highways, numbered by the County but maintained by the various Towns. For information on these, as well as on former and never-built county routes, please visit Steve Anderson's Suffolk County listing at

Suffolk County routes are generally quite long, often comprising several different named roads or portions thereof. They range from busy, multi-lane highways (some are even controlled-access) to two-lane country roads and local streets. Although county routes are comparatively few, given the County's large size and high degree of urbaniztion, the heavy traffic volumes and high capacities of the roads make Suffolk's highway system one of the most important in New York State.

In the "Towns" column, Villages are also listed.

1 County Line Road NY 27A, Amityville Southern State Parkway at Exit 32 Amityville, Babylon, Oyster Bay line
2 Dixon Avenue
Straight Path
Seamans Neck Road
NY 110, Amityville NY 231, Half Hollow Hills Amityville, Babylon, Lindenhurst, Huntington
3 Wellwood Avenue
Pinelawn Road
Lindenhurst vill. line Walt Whitman Road & Sweet Hollow Road, Melville Babylon, Huntington
4 Commack Road NY 231, North Babylon Town Line Road, Commack Babylon, Huntington, Smithtown line
6 Old Willets Path
Kings Highway
CR 67 NY 111, Hauppauge Islip, Smithtown
7 Wicks Road CR 13, Brentwood CR 67, Brentwood Islip
10 Elwood Road NY 25, Elwood NY 25A, Northport line Huntington, Northport line
11 West Pulaski Road
East Pulaski Road
Pulaski Road
East Northport Road
Nassau Co. line NY 25A, Kings Park Huntington, Smithtown Continues as Nassau CR
12 Oak Street
West Hoffman Avenue
East Hoffman Avenue
CR 1 & SR 900D, Amityville CR 96, W of Babylon Amityville, Babylon, Lindenhurst
13 5th Avenue
Crooked Hill Road
NY 27A, Bay Shore CR 4, S of Commack Islip, Smithtown
13A Clinton Avenue NY 27A, Bay Shore CR 13, Bay Shore Islip
14 Indian Head Road NY 25 at Sunken Meadow State Parkway (Exit SM2), Commack NY 25A, Kings Park Smithtown
16 Terry Road
Smithtown Boulevard
Lake Shore Road
Portion Road
Horseblock Road
NY 25, Village of the Branch CR 80, Brookhaven Village of the Branch, Smithtown, Brookhaven
17 Carleton Avenue
Wheeler Road
NY 27A, East Islip NY 111 at I-495 (Exit 56), Hauppauge Islip
19 West Avenue
Waverly Avenue
Patchogue-Holbrook Road
Patchogue Road
CR 65, Patchogue CR 16, Lake Ronkonkoma Patchogue, Brookhaven, Islip
21 Yaphank Avenue
Main Street
Yaphank-Middle Island Road
Yaphank-Middle Island-Rocky Point Road
Rocky Point Road
CR 80, Brookhaven NY 25A, S of Rocky Point Brookhaven
28 New Highway NY 27, W of Lindenhurst NY 109 at Southern State Parkway (Exit 34) Babylon
29 Smithtown Avenue
Ronkonkoma Avenue
CR 93, S of Lakeland SR 906A (Exit 60), Ronkonkoma Islip, Brookhaven
31 Old Riverhead Road CR 80, Westhampton Beach CR 104 Westhampton Beach, Southampton
32 Ponquogue Avenue
Ponquogue Bridge
Beach Road, S of Ponquogue N bridge abutment, Ponquogue Southampton
34 Deer Park Avenue Babylon vill. line NY 231, North Babylon Babylon
35 Deer Park Road
Deer Park Road West
Park Avenue
Mill Dam Road
Becomes NY 231 at Northern State Parkway (Exit 42), Dix Hills West Shore Road, Halesite Huntington Excludes Park Avenue between NY 25A & NY 110
36 South Country Road CR 80, East Patchogue CR 80, Brookhaven Brookhaven, Bellport Old NY 27
38 North Sea Road NY 27/CR 39 at Southampton vill. line c. 500' S of Noyack Road, North Sea Southampton, Southampton
39 North Road CR 80, Canoe Place CR 39A, N of Southampton Southampton, Southampton Overlaps NY 27, E of Sunrise Highway
Elsewhere old NY 27
39A Flying Point Road CR 39, N of Southampton Hampton Road & Montauk Highway, Southampton vill. line Southampton, Southampton line Entire length overlaps NY 27
39B Canal Road
Old North Highway
CR 39, Canoe Place CR 39, Canoe Place Southampton
40 Three Mile Harbor Road East Hampton vill. line c. 250' N of Copeces Lane East Hampton Not posted
41 Springs-Fireplace Road CR 40, Freetown Becomes town road at Kingstown East Hampton Not posted
42 Shore Road Becomes town road at Jennings Point CR 115 Shelter Island
43 Northville Turnpike CR 73, Riverhead Sound Avenue, W of Northville Riverhead
46 Suffolk Boulevard
Smith Point Bridge
William Floyd Parkway
CR 75 NY 25A, E of Shoreham Brookhaven
47 Great Neck Road CR 27A, Copiague Nassau Co. line, South Farmingdale Babylon Continues as Nassau CR
48 Middle Road c. 800' W of Cox Neck Road, Mattituck NY 25, Stirling Southold, Greenport line
49 Edgemere Street
Flamingo Avenue
NY 27, Montauk CR 77, N of Montauk East Hampton
50 Park Avenue
Deer Park Avenue
Cooper Street
John Street
Union Boulevard
NY 109, Babylon vill. line NY 27A, East Islip Babylon, Islip, Brightwaters
51 East Moriches-Riverhead Road
Center Drive South
CR 80, East Moriches NY 24/CR 94, Riverhead Brookhaven, Southampton
52 Sandy Hollow Road NY 27/CR 39, Tuckahoe CR 38, Tuckahoe Southampton
54 Hulse Landing Road Sound Avenue, E of Wading River Wildwood State Park bdy. Riverhead
55 Eastport Road CR 80, Eastport CR 51, N of Eastport Brookhaven
57 Bay Shore Road
Howells Road
Third Avenue
NY 231, Deer Park CR 50, Bay Shore Babylon, Islip, Brightwaters
58 Old Country Road NY 25, E of Calverton NY 25, Riverhead Riverhead
59 Long Lane c. 500' E of Stephen Hands Path East Hampton vill. line East Hampton Not posted
60 Long And Short Beach Highway
Short Beach Road
Noyack Road, Noyack NY 114, North Haven Southampton, North Haven
61 Waverly Avenue CR 19, North Patchogue CR 99 WB ramp Islip Not posted
62 Newtown Road
Sunset Avenue
CR 80, Canoe Place Dead end at Shinnecock Canal Southampton Not posted
63 Old Riverhead-Moriches Road CR 51, Riverside NY 25, Riverhead Southampton, Riverhead
65 Middle Road
Atlantic Avenue
Weeks Street
River Avenue
Division Street
CR 85, Sayville CR 19, Patchogue Islip, Brookhaven, Patchogue
66 Deer Park Road East CR 35, Dix Hills NY 25, Elwood Huntington
67 Vanderbilt Parkway
Long Island Motor Parkway
Half Hollow Road, Half Hollow Hills CR 93, Lake Ronkonkoma Huntington, Smithtown, Islip, Islandia
69 Cartwright Road NY 114 Ram Island Road Shelter Island Not posted
71 1) Old Country Road CR 80, Eastport CR 55, Eastport Brookhaven
2) Mill Road CR 80, Westhampton Westhampton Beach vill. line Southampton
73 Roanoke Avenue NY 25, Riverhead CR 58, Riverhead Riverhead
75 Fire Island Beach Road CR 46 Smith Point Park parking area Brookhaven
76 Town Line Road NY 347, Hauppauge Nichols Road, Nesconset Smithtown, Islip line
77 West Lake Road NY 27, Montauk Loop at Lake Montauk outlet East Hampton
79 Bridgehampton-Sag Harbor Turnpike
Main Street
NY 27, Bridgehampton Kiln Road, Sag Harbor Southampton, Sag Harbor
80 Montauk Highway Patchogue vill. line Becomes SR 900W, Shinnecock Hills Brookhaven, Southampton, Westhampton Beach, Quogue Old NY 27 & NY 27A
81 Wharf Street Extension NY 114, Sag Harbor Dead end Sag Harbor
82 Higbie Lane
Udalls Road
NY 27A, West Islip SR 906D Islip
83 North Ocean Avenue
Patchogue-Mount Sinai Road
SR 906C NY 25A, S of Mount Sinai Brookhaven
85 Montauk Highway NY 27A at NY 27 (Exit 47), Oakdale Patchogue River, Patchogue Islip, Brookhaven, Patchogue Old NY 27A; prev. NY 27
86 Broadway
Greenlawn-Centerport Road
NY 25, E of South Huntington NY 25A, Centerport Huntington
89 Dune Road Becomes town road at Picket Point Becomes town road, E of Jessup Lane Westhampton Beach
90 Furrows Road c. 500' W of CR 97 SB ramps, Holbrook Brookhaven town line Islip
92 Oakwood Road NY 25, South Huntington NY 110, Huntington Huntington
93 Lakeland Avenue
Ocean Avenue
Rosevale Avenue
SR 906C (Exit 49), Bohemia CR 16, Lake Ronkonkoma Islip, Smithtown
94 Nugent Drive River Road & Edwards Avenue, Calverton CR 63 & CR 104, Riverhead Riverhead, Brookhaven, Southampton Overlaps NY 24, E of I-495
94A Center Drive Spur NY 24/CR 94, Riverhead NY 25, Riverhead Southampton, Riverhead
96 Bergen Avenue
Great East Neck Road
Dead end at Great South Bay NY 109, W of Babylon Babylon
97 Nicolls Road CR 85, Bayport NY 25A, Stony Brook Islip, Brookhaven
98 Frowein Road CR 80, Moriches CR 80, East Moriches Brookhaven
99 Woodside Avenue CR 19, Holbrook CR 16 Islip, Brookhaven
100 Suffolk Avenue CR 13, Brentwood NY 454, Islandia Islip, Islandia
101 Patchogue-Yaphank Road CR 80, East Patchogue Sills Road, Yaphank Brookhaven
104 Quogue-Riverhead Road
Riverleigh Avenue
CR 80, Quogue NY 24/CR 94 & CR 63, Riverhead Quogue, Southampton Old NY 113
105 Cross River Drive CR 104, S of Riverhead Sound Avenue, W of Northville Southampton, Riverhead
106 Campus Road CR 13, Brentwood CR 7, Brentwood Southampton, Riverhead Not posted
111 Captain Daniel Roe Highway
Port Jefferson-Westhampton Road
I-495 at Exit 70, Manorville Dead end, E of NY 27 (Exit 62) Brookhaven, Southampton
112 Johnson Avenue SR 906C, Bohemia NY 454 Islip Not posted
115 West Neck Road CR 42 NY 114 Shelter Island
116 Smith Street
Menantic Road
Midway Road, Shelter Island CR 115 Shelter Island
117 Burns Avenue Saint Marys Road CR 69 Shelter Island
--- Victory Avenue CR 16 at NY 27 (Exit 57) CR 46 at NY 27 (Exit 58), Shirley Brookhaven
--- I-495 EB service road CR 83 & SR 906A I-495 at Exit 68 Brookhaven
--- I-495 WB service road CR 83 & SR 906B I-495 at Exit 68 Brookhaven

SOURCES: NYSDOT Suffolk County map (1993), NYSDOT New York State Atlas (1998/2000).

Edition 11/21/MM

Link: Nassau and Suffolk County photos

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