The following county routes were proposed for Suffolk County. A majority of them exist as county roads. There are also a good number that exist but were never taken over by the county. Finally, some county routes were never built. At this point, it is highly unlikely that any of them will ever be built.
 | County Line Road |
|
From: Montauk Highway (NY 27A) To: Great Neck Road (CR 47) Status: County maintained from NY 27A to Joyce Avenue. Locally maintained from Joyce Avenue to CR 47. Note: CR 1 was cut in half by the construction of the Southern Parkway. | |
 | Dixon Avenue, Straight Path, Seamans Neck Road |
|
From: Broadway (NY 110) To: Motor Parkway (CR 67) Status: County maintained from NY 110 to NY 231. Unbuilt from NY 231 to CR 67. | |
 | Wellwood Avenue, Pinelawn Road |
|
From: New York Avenue To: Walt Whitman Road Status: County maintained. | |
 | Commack Road, Town Line Road, Bread and Cheese Hollow Road |
|
From: Deer Park Avenue (NY 231) To: Fort Salonga Road (NY 25A) Status: County maintained from NY 231 to Dovecote Lane. Locally maintained from Dovecote Lane to NY 25A. | |
 | Ruland Road, Colonial Springs Road |
|
From: Broad Hollow Road (NY 110) To: Little East Neck Road (CR 95) Status: Locally maintained. | |
 | Kings Highway, Rabro Drive |
|
From: Old Willets Path (CR 108) To: Wheeler Road (NY 111) Status: County maintained. | |
 | Wicks Road |
|
From: Crooked Hill Road (CR 13) To: Vanderbilt Parkway (CR 67) Status: County maintained. | |
 | Yaphank Bypass |
|
From: Long Island Expressway (I-495) To: Yaphank-Middle Island Road (CR 21) Status: Unbuilt. | |
 | Cuba Hill Road, Greenlawn Road |
|
From: Elwood Road (CR 10) To: Main Street (NY 25A) Status: Locally maintained. | |
 | Elwood Road |
|
From: Jericho Turnpike (NY 25) To: Fort Salonga Road (NY 25A) Status: County maintained. | |
 | Pulaski Road, East Northport Road |
|
From: Harbor Road (NY 108) at the Nassau-Suffolk border To: Main Street (NY 25A) Status: County maintained. | |
 | Oak Street, Hoffman Avenue, Railroad Avenue |
|
From: Old Sunrise Highway and County Line Road (CR 1) at the Nassau-Suffolk border To: Great East Neck Road (CR 96) Status: County maintained. | |
 | Fifth Avenue, Wicks Road, Crooked Hill Road |
|
From: Montauk Highway (NY 27A) To: Commack Road (CR 4) Status: County maintained. | |
 | Clinton Avenue |
|
From: Montauk Highway (NY 27A) To: Fifth Avenue (CR 13) Status: County maintained. | |
 | Harned Road, Indian Head Road, Tyler Avenue |
|
From: Motor Parkway (CR 67) To: North Shore Road Status: Locally maintained from CR 67 to NY 25. County maintained from NY 25 to NY 25A. Unknown from NY 25A to North Shore Road. Note: CR 14 was supposed to run north of NY 25A along Tyler Avenue to North Shore Road. However, neither of these roads is shown on any modern map. It is likely that Tyler Avenue and North Shore Road are old names for the roads currently known as Church Street/Kohr Road and Sunken Meadow Road, respectively. | |
 | Maple Avenue |
|
From: Hauppauge Road (NY 111) To: Main Street (NY 25/NY 25A) Status: Locally maintained. | |
 | Terry Road, Smithtown Boulevard, Lake Shore Road, Portion Road, Horse Block Road |
|
From: Middle County Road (NY 25) To: Montauk Highway (CR 80) Status: County maintained. | |
 | Carleton Avenue, Wheeler Road |
|
From: Montauk Highway (NY 27A) To: Joshua's Path (NY 111) Status: County maintained. | |
 | Broadway Avenue |
|
From: Montauk Highway (CR 85) To: Patchogue-Holbrook Road (CR 19) Status: Locally maintained. | |
 | West Avenue, Waverly Avenue, Patchogue-Holbrook Road |
|
From: Division Street (CR 65) To: Portion Road (CR 16) Status: County maintained. | |
 | North Country Road |
|
From: Main Street (NY 25A) To: NY 25A Status: Locally maintined. | |
 | Yaphank Avenue, Main Street, Yaphank-Middle Island Road, Rocky Point Road |
|
From: Montauk Highway (CR 80) To: NY 25A Status: County maintained. | |
 | Manor Lane |
|
From: Main Road (NY 25) To: Sound Avenue Status: Locally maintained. | |
 | Church Lane |
|
From: Main Road (NY 25) To: Sound Avenue Status: Locally maintained. | |
 | Longwood Road |
|
From: Yaphank Bypass (CR 8) (unbuilt) To: William Floyd Parkway (CR 46) Status: Unbuilt from CR 8 to CR 21. Locally maintained from CR 21 to CR 46. | |
 | Brookfield Avenue, Wading River Road, Schultz Road, Wading River Manor Road |
|
From: Montauk Highway (CR 80) To: Hulse Avenue (NY 25A) Status: Locally maintained. | |
 | New Highway, Republic Road |
|
From: Sunrise Highway (NY 27) To: Ruland Road (CR 5) Status: County maintained from NY 27 to NY 109. Locally maintained from NY 109 to CR 5. | |
 | Smithtown Avenue, Ronkonkoma Avenue |
|
From: Ocean Avenue (CR 93) To: Long Island Expressway (I-495) Status: Locally maintained. | |
 | East Lake Drive |
|
From: Montauk Highway (NY 27) To: Montauk Airport Status: Locally maintained. | |
 | Old Riverhead Road |
|
From: Montauk Highway (CR 80) To: Quogue-Riverhead Road (CR 104) Status: County maintained. | |
 | Lighthouse Road, Foster Avenue, Shinnecock Road, Ponquogue Avenue |
|
From: Dune Road (CR 89) To: Montauk Highway (CR 80) Status: County maintained from CR 89 to north end of Ponquogue Bridge. Locally maintained from north end of Ponquogue Bridge to CR 80. | |
 | Cranberry Hole Road, Promised Land Road |
|
From: Montauk Highway (NY 27) To: CR 38 (unbuilt) Status: Locally maintained. | |
 | Deer Park Avenue |
|
From: Village Line Road To: Babylon-Northport Expressway (NY 231) Status: County maintained. | |
 | Deer Park Road, Park Avenue, Mill Dam Road, West Shore Road |
|
From: Northern Parkway, Deer Park Road (NY 231), and East Deer Park Road (CR 66) To: Browns Road Status: County maintained from NY 231 to NY 25A. Locally maintained from NY 25A to NY 110. County maintained from NY 110 to end of Mill Dam Road. Locally maintained from end of Mill Dam Road to Browns Road. | |
 | South Country Road |
|
From: Montauk Highway (CR 80) To: Montauk Highway (CR 80) Status: County maintained | |
 | North Sea Road, Noyack Road, Sag Harbor Road, Promised Land Road |
|
From: North Road (NY 27/CR 39) To: Montauk Highway (NY 27) Status: County maintained from NY 27 to Noyack Road. Locally maintained along Noyack Road to Brick Kiln Road. Unbuilt from Brick Kiln Road to NY 27. | |
 | North Road |
|
From: Montauk Highway (CR 80) To: Montauk Highway (NY 27) Status: County maintained from CR 80 to CR 39A. Unbuilt from CR 39A to NY 27. | |
 | Flying Point Road |
|
From: North Road (NY 27/CR 39) To: Montauk Highway (NY 27) Status: County maintained. | |
 | Canal Road, Old North Highway |
|
From: North Road (CR 39) To: North Road (CR 39) Status: County maintained. | |
 | North Main Street, Three Mile Harbor Road |
|
From: Cedar Street To: Hog Creek Road (CR 45) Status: County maintained from Cedar Street to Copeces Lane. Locally maintained from Copeces Lane to Hog Creek Road. | |
 | Springs-Fireplace Road |
|
From: Three Mile Harbor Road (CR 40) To: Old Stone Highway (CR 45) Status: County maintained from CR 40 to Woodbine Drive. Locally maintained from Woodbine Drive to CR 45. | |
 | Shore Road |
|
From: West Neck Road (CR 115) To: Rocky Point Avenue Status: County maintained. | |
 | Northville Turnpike |
|
From: Roanoke Avenue (CR 73) To: Sound Avenue Status: County maintained. | |
 | North Haven-Shelter Island Road |
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From: South Ferry Road (NY 114) To: Dead end at Shelter Island Sound Status: Unbuilt. | |
 | Abrams Landing Road, Old Stone Highway, Springs-Fireplace Road, Hog Creek Road |
|
From: Montauk Highway (NY 27) To: Three Mile Harbor Road (CR 40) Status: Locally maintained. | |
 | William Floyd Parkway |
|
From: Fire Island Beach Road (CR 75) To: NY 25A Status: County maintained. | |
 | Great Neck Road, Main Street |
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From: Montauk Highway (NY 27A) To: Nassau-Suffolk border Status: County maintained. | |
 | Middle Road |
|
From: Cross River Drive (CR 105) To: Main Road (NY 25) Status: Unbuilt from CR 105 to Sound Avenue. County maintained from Sound Avenue to NY 25. | |
 | Edgemere Street, Flamingo Avenue |
|
From: Montauk Highway (NY 27) To: West Lake Drive (CR 77) Status: County maintained. | |
 | Park Avenue, Simon Street, John Street, Union Boulevard |
|
From: Great East Neck Road (CR 96) To: Montauk Highway (NY 27A) Status: Unbuilt from CR 96 to NY 109. County maintained from NY 109 to NY 27A. | |
 | East Moriches-Riverhead Road, Center Drive South |
|
From: Montauk Highway (CR 80) To: Center Drive (NY 24/CR 94) Status: County maintained. | |
 | Sandy Hollow Road |
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From: North Road (NY 27/CR 39) To: North Sea Road (CR 38) Status: County maintained. | |
 | Hulse Landing Road |
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From: Parker Road (NY 25A) To: North Wading River Road Status: Locally maintained from NY 25A to Sound Avenue. County maintained from Sound Avenue to North Wading River Road. | |
 | Eastport Manor Road |
|
From: Montauk Highway (CR 80) To: Swan Pond Road Status: County maintained from CR 80 to CR 51. Locally maintained from CR 51 to CR 111. Unbuilt from CR 111 to Swan Pond Road. | |
 | Victory Avenue |
|
From: Horse Block Road (CR 16) To: William Floyd Parkway (CR 46) Status: County maintained. | |
 | Bay Shore Road, Howells Road, Third Avenue |
|
From: Deer Park Avenue (NY 231) To: Montauk Highway (NY 27A) Status: County maintained from NY 231 to CR 50. Locally maintained from CR 50 to NY 27A. | |
 | Old Country Road |
|
From: Middle County Road (NY 25) To: Main Road (NY 25) Status: County maintained. | |
 | Long Lane, Two Holes of Water Road, Swamp Road |
|
From: Newtown Lane To: East Hampton-Sag Harbor Turnpike (NY 114) Status: County maintained from Newtown Lane to Stephen Hands Path. Locally maintained from Stephen Hands Path to NY 114. | |
 | Noyack-Long Beach Road, Short Beach Road |
|
From: Noyack Road (CR 38) To: South Ferry Road (NY 114) Status: County maintained. | |
 | Waverly Avenue |
|
From: Patchogue-Holbrook Road (CR 19) To: Furrows Road (CR 90) Status: County maintained from CR 19 to CR 99. Locally maintained from CR 99 to CR 90. | |
 | Newtown Road, Nunset Lane |
|
From: Montauk Highway (CR 80) To: Dead end at the Shinnecock Canal Status: County maintained. | |
 | Old East Moriches-Riverhead Road, Peconic Avenue |
|
From: East Moriches-Riverhead Road (CR 51) and Center Drive South (CR 51) To: Main Street (NY 25) Status: County maintained. | |
 | Sills Road, Mill Road |
|
From: Sills Road (CR 101) and Long Island Avenue To: Yaphank-Middle Island Road (CR 21) Status: Locally maintained. | |
 | Middle Road, Atlantic Avenue, Weeks Street, River Avenue, Division Street |
|
From: Montauk Highway (CR 85) To: West Avenue (CR 19) Status: County maintained. | |
 | East Deer Park Road |
|
From: Deer Park Road (NY 231/CR 35) and Northern Parkway To: Jericho Turnpike (NY 25) Status: County maintained. | |
 | Half Hollow Road, Vanderbilt Parkway, Motor Parkway |
|
From: Pinelawn Road (CR 3) To: Rosevale Avenue (CR 93) Status: Locally maintained from CR 3 to beginning of Vanderbilt Parkway. County maintained from beginning of Vanderbilt Parkway to CR 93. | |
 | Cartwright Road |
|
From: South Ferry Road (NY 114) To: Ram Island Road Status: County maintained. | |
 | Old West Lake Drive |
|
From: Montauk Highway (NY 27) To: West Lake Drive (CR 77) Status: Locally maintained. | |
 | Old Country Road, Mill Road |
|
From: Montauk Highway (CR 80) To: Oneck Lane Status: County maintained from CR 80 to CR 55. Locally maintained from CR 55 to CR 80. County maintained from CR 80 to Oneck Lane. | |
 | Roanoke Avenue |
|
From: Main Street (NY 25) To: Sound Avenue Status: County maintained from NY 25 to CR 58. Locally maintained from CR 58 to Sound Avenue. | |
 | Abrams Landing Road, Promised Land Road Extension |
|
From: Old Stone Highway (CR 45) To: Promised Land Road (CR 33) Status: Locally maintained along Abrams Landing Road. Unbuilt from Abrams Landing Road to CR 33. | |
 | Fire Island Beach Road |
|
From: William Floyd Parkway (CR 75) To: Dead end at the Moriches Inlet Status: County maintained from CR 75 to 2600 feet east of CR 75. Unbuilt from 2600 feet east of CR 75 to Moriches Inlet. | |
 | Town Line Road |
|
From: Smithtown Bypass (NY 347) To: Smithtown Boulevard (CR 16) Status: County maintained from NY 347 to Nichols Road. Unbuilt from Nichols Road to CR 16. | |
 | West Lake Drive |
|
From: Montauk Highway (NY 27) To: Flamingo Avenue (CR 49) Status: County maintained. | |
 | Church Street, Kennedy Avenue |
|
From: Sunrise Highway (NY 27) To: Montauk Highway (CR 85) Status: Locally maintained. | |
 | Bridgehampton-Sag Harbor Turnpike, Main Street |
|
From: Montauk Highway (NY 27) To: Brick Kiln Road Status: County maintained. | |
 | Montauk Highway |
|
From: Bay Avenue To: Knoll Road Status: County maintained. | |
 | Wharf Street |
|
From: South Ferry Road (NY 114) To: Dead end Status: Locally maintained. | |
 | Higbie Lane, Udall Road |
|
From: Montauk Highway (NY 27A) To: Sunrise Highway (NY 27) Status: County maintained. | |
 | North Ocean Avenue, Patchogue-Mount Sinai Road |
|
From: Howard Avenue To: NY 25A Status: County maintained. | |
 | Cox Neck Road, Mill Road |
|
From: Middle Road (CR 48) To: Mill Lane Status: Locally maintained. Note: Mill Road ends at Mattituck Creek and then begins again on the other side. Most likely, a bridge was supposed to be built at this point. | |
 | Montauk Highway |
|
From: Sunrise Highway (NY 27) and NY 27A To: West of West Avenue (CR 19) Status: County maintained. | |
 | Broadway Greenlawn, Centerport Road |
|
From: Jericho Turnpike (NY 25) To: Main Street (NY 25A) Status: County maintained. | |
 | Edgewood Avenue |
|
From: Main Street (NY 25/NY 25A) To: North Country Road (NY 25A) Status: Locally maintained. | |
 | Speonk-Riverhead Road |
|
From: Montauk Highway (CR 80) To: East Moriches-Riverhead Road (CR 51) Status: Locally maintained. | |
 | Dune Road |
|
From: Dead end at the Moriches Inlet To: Dead end at the Shinnecock Inlet Status: Locally maintained from Moriches Inlet to west of Jessup Lane. County maintained from west of Jessup Lane to east of Jessup Lane. Locally maintained from east of Jessup Lane to Shinnecock Inlet. | |
 | Furrows Road, Barretts Avenue, Peconic Avenue |
|
From: Ocean Avenue (CR 93) To: Horse Block Road (CR 16) Status: Unbuilt from CR 93 to Lincoln Avenue. Locally maintained from Lincoln Avenue to CR 97. County maintained from CR 97 to CR 61. Locally maintained from CR 61 to dead end. Unbuilt from dead end to CR 83. Locally maintained from CR 83 to CR 16. | |
 | Oakwood Road, High Street |
|
From: Jericho Turnpike (NY 25) To: New York Avenue (NY 110) Status: County maintained. | |
 | Lakeland Avenue, Ocean Avenue, Rosevale Avenue |
|
From: Sunrise Highway (NY 27) To: Smithtown Boulevard (CR 16) Status: County maintained. | |
 | Nugent Drive, Center Drive |
|
From: Hulse Avenue (NY 25A) To: Quogue-Riverhead Road (NY 104) Status: Unbuilt from NY 25A to River Road. County maintained from River Road to I-495. County maintained and multiplexed with NY 24 from River Road to CR 104. | |
 | Center Drive Spur |
|
From: Nugent Drive (NY 24/CR 94) To: Main Street (NY 25) Status: County maintained. | |
 | Little East Neck Road |
|
From: Babylon-Farmingdale Road (NY 109) To: Colonial Springs Road (CR 5) Status: Locally maintained. | |
 | Great East Neck Road, Bergen Avenue |
|
From: Babylon-Farmingdale Road (NY 109) To: Dead end at Bergen Point Golf Course Status: County maintained. | |
 | Nicolls Road |
|
From: Montauk Highway (CR 85) To: North Country Road (NY 25A) Status: County maintained. | |
 | Frowein Road |
|
From: Montauk Highway (CR 80) To: Montauk Highway (CR 80) Status: County maintained. | |
 | Woodside Avenue |
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From: Patchogue-Holbrook Road (CR 19) To: Horse Block Road (CR 16) Status: County maintained. | |
 | Suffolk Avenue |
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From: Wicks Road (CR 13) To: Veterans Memorial Highway (NY 454) Status: County maintained. | |
 | Patchogue-Yaphank Road, Sills Road |
|
From: Montauk Highway (CR 80) To: William Floyd Parkway (CR 46) Status: County maintained from CR 80 to Long Island Avenue. Unbuilt from Long Island Avenue to CR 46. | |
 | East Main Street |
|
From: Yaphank Avenue (CR 21) To: William Floyd Parkway (CR 46) Status: Locally maintained from CR 21 to Moriches-Middle Island Road. Unbuilt from Moriches-Middle Island Road to CR 46. | |
 | Cedar Swamp Road |
|
From: Center Drive South (CR 51) To: Old Country Road (CR 58) Status: Unbuilt. | |
 | Quogue-Riverhead Road, Riverleigh Avenue |
|
From: Montauk Highway (CR 80) To: Center Drive (NY 24/CR 94) Status: County maintained. | |
 | Hot Water Street, Cross River Drive |
|
From: Captain Daniel Roe Highway (CR 111) To: Sound Avenue Status: Locally maintained from CR 111 to dead end. Unbuilt from dead end to CR 104. County maintained from CR 104 to Sound Avenue. | |
 | Community College Road |
|
From: Crooked Hill Road (CR 13) To: Wicks Road (CR 7) Status: County maintained. | |
 | Belmont Avenue |
|
From: Little East Neck Road (CR 95) To: Jericho Turnpike (NY 25) Status: Locally maintained from CR 95 to Wyandanch Avenue. Unbuilt from Wyandanch Avenue to NY 25. | |
 | Old Willets Path |
|
From: Motor Parkway (CR 67) To: Kings Highway (CR 6) Status: County maintained. | |
 | A.O. Smith Turnpike |
|
From: Nicolls Road (CR 97) To: NY 25A Status: Unbuilt. | |
 | Captain Daniel Roe Highway |
|
From: NY 25A and Nesconset Highway (NY 347) To: Old Country Road (CR 71) Status: Unbuilt from NY 25A to I-495. County maintained from I-495 to NY 27. Unbuilt from NY 27 to CR 71. | |
 | Johnson Avenue |
|
From: Sunrise Highway (NY 27) To: Veterans Memorial Highway (NY 454) Status: County maintained. | |
 | Stephen Hands Path |
|
From: Montauk Highway (NY 27) To: North Road (CR 39) Status: Locally maintained. | |
 | West Neck Road |
|
From: Shore Road (CR 42) To: North Ferry Road (NY 114) Status: County maintained. | |
 | Menantic Road, Smith Street |
|
From: West Neck Road (CR 115) To: Midway Road Status: County maintained. | |
 | Burns Avenue |
|
From: Cartwright Road (CR 69) To: Ram Island Road Status: County maintained. |
