| Caption: | CR 101 heading northbound with old Suffolk County signage on the right |
| Interstate: | Interstate X (I-X) |
| Us: | U.S. Route X (US X) |
| Statehwy: | New York State Route X (NY X) |
| Label1: | County: |
| Field1: | County Route X (CR X) |
| Links: | NY |
| County: | Suffolk |
County routes in Suffolk County, New York, are maintained by the Suffolk County Department of Public Works and signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. The designations do not follow any fixed pattern. Routes 101 to 117 are listed below.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 101 |
| Length Mi: | 8.4 |
| Formed: | 1961 |
| Location: | East Patchogue–Yaphank |
County Route 101 runs northeast and southwest from CR 80 (Montauk Highway) to Long Island Avenue, north of exit 66 on the Long Island Expressway. The road is known as Patchogue–Yaphank Road in some sections and Sills Road in others. Patchogue–Yaphank Road continues past Long Island Avenue as a Brookhaven-maintained road.
Like many of the roads built by Suffolk County between the 1940s and 1970s, it had the potential to be upgraded into a limited-access highway, but those proposals were thwarted by development and public opposition.
The former segment between Hospital Road and Gazzola Drive (formerly part of Sipp Avenue) was left to local residents. One portion of the segment between Gazzola Drive and Martha Avenue became an extension of Martha Avenue with a connecting road to CR 101, while the rest of it was closed to traffic in the late 1980s. That segment was replaced with a dead end street leading to a series of condominiums in the early-21st Century.
The former segment between Old Dock and the Long Island Expressway was abandoned south of the main line of the Long Island Rail Road, while the rest of it as well as a connecting road in between was made into an extension of Long Island Avenue. The south side of the bridge over the railroad tracks that replaced the old one also contains a right-of-way for the formerly proposed CR 90 (Central Suffolk Highway).
In addition, at the vicinity of the interchange with the Long Island Expressway, there was to be a southern terminus of CR 8 (the proposed Yaphank Bypass). This was planned either in conjunction with the Sills Road extension, or in the event of its cancellation.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 102 |
| Location: | Yaphank |
| Header Type: | former |
County Route 102 was a formerly proposed four-lane county road in Yaphank, that began along East Main Street east of CR 21 (Yaphank Avenue). Unlike the existing East Main Street, it was not intended to become Moriches–Middle Island Road and cross over the Long Island Expressway. The road intended to terminate at the westbound service road of the interchange between the Long Island Expressway and William Floyd Parkway.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 103 |
| Location: | Cranberry Bog County Park |
| Header Type: | former |
County Route 103 was intended to be Cedar Swamp Road, a proposed road northwest of CR 51 within Cranberry Bog County Park leading toward the Long Island Expressway.
See main article: County Route 104 (Suffolk County, New York).
County Route 104 is a north–south highway connecting CR 80 in Quogue to NY 24, CR 63 and CR 94 just outside Riverhead. Much of CR 104 runs through the David Allen Sarnoff Pine Barrens Preserve, a major New York State Conservation Area, that was once owned by Radio Corporation of America. From 1930 to 1972, the road was signed as NY 113.[2]
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 104A |
| Formed: | 1972 |
| Deleted: | 1986 |
| Location: | Oakville–East Quogue |
County Route 104A was Lewis Road, a suffixed route of CR 104 running southeast from Oakville to CR 80 (Montauk Highway) in East Quogue. Today the road is designated as the Lewis Road Bike Route by the Town of Southampton.[3]
See main article: County Route 105 (Suffolk County, New York).
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 105 |
| Length Mi: | 5.3 |
| Location: | Flanders–Northville |
County Route 105 is a major county road connecting CR 104 in the David Allen Sarnoff State Pine Barrens Preserve, which bypasses downtown Riverhead and leads to Sound Avenue in Northville.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 106 |
| Formed: | 1975 |
| Location: | Brentwood |
County Route 106 is a road spanning from Pilgrim State Psychiatric Center to CR 7, which was originally part of the hospital when it had more territory. Pilgrim State called it "G Road," a name it still contains within the hospital. The entire road runs along a Long Island Power Authority power line right-of-way, which was inherited from the Long Island Lighting Company.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 107 |
| Length Mi: | 1.7 |
| Formed: | 1961 |
| Location: | West Babylon |
County Route 107 is unmarked along Belmont Avenue within Babylon Township. It runs northeast and southwest.
The last major intersection is the interchange with Southern State Parkway (exit 37) in North Babylon, which is just south of the terminus of the road at the entrance to the New York State Office of Parks, Recreation and Historic Preservation Long Island Headquarters in Belmont Lake State Park, across from Essex Street. Belmont Avenue continues northbound to Wyandanch Avenue and August Road as a town of Babylon maintained road.
The route was proposed to be relocated onto Hubbard's Path and Cadman Avenue as part of its potential transformation into the West Babylon–Centerport Highway. Then, it used the remainder of Belmont Avenue which was to be extended north of Belmont Lake State Park towards the vicinity of exit 50 on the Long Island Expressway. At Half Hollow Hills Road (CR 67) it would have replaced Cadman Road and much of Pigeon Hill Road, then curve to the northeast and intersect with NY 25 (Jericho Turnpike) onto CR 86, most if not all of which it was also intended to replace.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 108 |
| Formed: | 1962 |
| Location: | Central Islip–Smithtown |
County Route 108 is known as Caleb's Path from NY 111 to Motor Parkway and Old Willets Path from Motor Parkway to NY 25 near Caleb Smith State Park. Due to the fact that the road is bisected by the Long Island Expressway, northbound CR 108 is forced into a short concurrency with westbound Long Island Motor Parkway at exit 55.
Turning straight north again, the road runs through some residential areas until it curves northeast as it approaches Caleb Smith State Park, where the formerly proposed Northern State Parkway extension was supposed to be built a former section of the road that currently enters the park. Here CR 108 curves back north again and finally terminates at Jericho Turnpike, as does Old Willet's Path, which turns into Plymouth Boulevard, a Town of Smithtown residential street.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 110 |
| Location: | Centereach–Poquott |
| Header Type: | former |
County Route 110 was intended for the unbuilt four-lane highway known as the A.O. Smith Turnpike. The road was to begin at CR 97 in Centereach, replacing Wireless Road, then continue north of NY 347 running through South Setauket and East Setauket, where it would have utilized a portion of Sheep Pasture Road and all of Hulse Road, continuing north of Old Post Road into Poquott, where it would've either made a U-turn along the west shore of Port Jefferson Harbor,[7] or connected to a possible bridge to Bridgeport, Connecticut.
See main article: County Route 111 (Suffolk County, New York).
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 111 |
| Location: | Eastport–Manorville |
County Route 111 is the Captain Daniel Roe Highway; however, it was originally proposed as the Port Jefferson–Westhampton Beach Highway.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 112 |
| Length Mi: | 1.38 |
| Formed: | 1964 |
| Location: | Sayville–Islip Airport |
County Route 112 is Johnson Avenue between NY 27 and NY 454 at the entrance to the Long Island MacArthur Airport. The route is unsigned due to its close proximity to NY 112. Johnson Avenue begins at Lakeland Avenue and Tariff Street as a town road maintained by the town of Islip. It becomes CR 112 at the interchange with NY 27 (exit 50A), at which point the road widens from two to four lanes. North of Sunrise Highway, the route intersects Church Street before turning northwest. The road eventually intersects NY 454 before turning into the entrance to MacArthur Airport.
Johnson Avenue was originally known as Moscow Avenue, and reached as far north as the vicinity of Ronkonkoma Station until the Long Island MacArthur Airport was built.[8] The road was officially designated CR 112 on April 30, 1964.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 113 |
| Length Mi: | 2.5 |
| Formed: | 1966 |
| Location: | Georgica–Northwest Harbor |
County Route 113 is an unmarked street named Stephen Hands Path near the village of East Hampton. The route was established in 1966, and the intended northern terminus was to be at the formerly proposed CR 59.
In the vicinity of a fork in the road with Old Northwest Road, CR 113 was intended to terminate at the proposed extension of Sunrise Highway, which was also intended to be the proposed extension of CR 39. Instead, Stephen Hands Path becomes a Town of East Hampton road and continues northeast towards Hands Creek Road, while CR 113 moves north onto Old Northwest Road only for the north end to terminate at Cedar Street, while Old Northwest Road continues towards Northwest Harbor.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 115 |
| Length Mi: | 0.56 |
| Formed: | 1982 |
| Location: | Shelter Island Heights |
County Route 115 is West Neck Road in the hamlet of Shelter Island Heights on Shelter Island. The route begins at Shore Road (Nostrand and Brander parkways) and Bootlegger's Alley. At Worth Way, the road turns northeast and after the intersection with Westmoreland Road runs along the North shore of West Neck Bay. The shoreline of the bay ends just before the intersection of Hilo Drive. CR 115 briefly turns north and intersects CR 42, where the road turns east again along the southern border of the Shelter Island Country Club. The country club ends at the intersection with New York Avenue and CR 116. After intersecting a dead end street, the road becomes the northern terminus of Midway Road before finally terminating itself at a wye intersection with NY 114. CR 115 was previously designated as CR 28.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 116 |
| Length Mi: | 1.18 |
| Formed: | 1982 |
| Location: | Shelter Island Heights–Shelter Island |
County Route 116 is a pair of two-lane roads on Shelter Island. It begins at CR 115 in Shelter Island Heights on Menantic Road. Halfway between CR 115 and the south shore of Shelter Island, CR 116 runs along the east side of West Neck Bay and West Neck Creek, then turns east onto Smith Street, From here it runs close to the north shore of Menatic Creek, then intersects Midway Road. The road intersects four more streets in "downtown" Shelter Island before finally terminating at NY 114. Previously, the route was known as CR 29.
| State: | NY |
| Type: | CR |
| County: | Suffolk |
| Route: | 117 |
| Length Mi: | 0.45 |
| Formed: | 1982 |
| Location: | Shelter Island |
County Route 117 runs along Burns Road on Shelter Island. Previously, the road was designated as CR 30. Though not the shortest county road in Suffolk County (this status belongs to CR 81), the road spans a mere 0.45 miles from part of former CR 37 (Saint Mary's Road) to CR 69 (Cartwright Road). Burns Road continues east of the terminus of CR 69 to the west shore of Coecles Inlet.
