County Route 16 (Suffolk County, New York)

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County Route 16  marker

County Route 16
Map of County Route 16 (Suffolk County, New York)
Map of Suffolk County on Long Island with CR 16 highlighted in red
Route information
Maintained by SCDPW
Length: 16.02 mi[1] (25.78 km)
Existed: 1930 – present
Major junctions
West end: NY 25 in Smithtown
  NY 347 near Smithtown
CR 97 in Farmingville
CR 83 in Farmingville
NY 112 in Medford
I-495 in Medford
CR 101 near Yaphank
NY 27 near South Haven
East end: CR 80 near South Haven
Highway system

County Route 16 (CR 16) is a main thoroughfare through central Suffolk County, New York, in the United States. Its western terminus is at Middle Country Road (New York State Route 25 or NY 25) in Smithtown, on the eastern border of the Village of the Branch, and its eastern terminus is at Montauk Highway (CR 80) in Brookhaven near Southhaven. The route carries five different names along its length.

Route description[edit]

CR 16 begins as Terry Road at an intersection with NY 25. From NY 25, the road runs to the south near a former concrete factory. It then crosses NY 347. Several blocks south of NY 347, CR 16 joins Smithtown Boulevard, while Terry Road continues to run south as a road maintained by the Town of Smithtown, and crosses the Islip town line into Lakeland. A former section of Terry Road exists near NY 25A. It is unknown how this section connected to the present terminus of Terry Road at NY 25 while traversing the surrounding terrain.

Of the five roads shared by CR 16, Smithtown Boulevard is the only road completely controlled by Suffolk County. Not only are there no former sections, but there are no sections of the road that branch off as local streets. Smithtown Boulevard goes from Smithtown, through Nesconset where it serves as the hamlet's main street, and eventually terminates in Lake Ronkonkoma east of CR 93 (Rosevale Avenue). At one time, CR 76 (Town Line Road) was proposed to curve north of the Smithtown–Islip town line, and terminate between Old Nichol's Road (not to be confused with CR 97, named Nicolls Road) and Rosevale Avenue.

Along the north and east side of Lake Ronkonkoma is a road known as Lake Shore Drive, the northern portion of which consists mostly of CR 16, except between Spectacle Lake Road and Schoolhouse Road, which is maintained by the Town of Smithtown. The east end of this section near Schoolhouse Road has suffered such excessive flooding that it was closed by Suffolk County and turned over to the Parks Department, while the rest of it was sold to a local night club on the lake and transformed into part of the parking lot. East of Schoolhouse Road however, the road crosses the Smithtown–Brookhaven town line and runs high along the bluffs of Lake Ronkonkoma until it reaches Portion Road. CR 16 moves east onto Portion Road while Lake Shore Drive continues south along the lake as a road maintained by the Town of Brookhaven.

Portion Road begins at the intersection of Lake Shore Drive. Old Portion Road is a former section of Portion Road located just south of that intersection. Through Lake Ronkonkoma and western Farmingville, CR 16 crawls eastward in a hilly region of Long Island, as it intersects with Ronkonkoma Avenue, Hawkins Avenue, CR 19 (Patchogue–Holbrook Road), and Holbrook Road before reaching an interchange with CR 97 (Nicolls Road), where the road opens up to four lanes. Suffolk County is currently planning to widen the rest of the road to four lanes.[2] This section of CR 16 once carried the additional name of Farm-to-Market Road.

For all intents and purposes, Horseblock Road is the main section of CR 16. Like Portion Road, it once shared the additional name of Farm-to-Market Road. Unlike the rest of CR 16, Horseblock Road's western terminus is at Middle Country Road (NY 25) in Centereach. Originally, Horseblock Road was connected to another street a few blocks west of the current terminus named Mark Tree Road. The two sections formed a single road that ran from South Setauket to South Haven. The connection between the two streets are cut off by a shopping center on the north side of NY 25 between Mark Tree and Eastwood Road. It then traverses to the south-southeast, and is cut off by CR 97 (Nicolls Road), Suffolk County Community College, and other county facilities in Farmingville, and joins up with Portion Road from a frontage road west of Nicolls Road named Leeds Boulevard at the interchange with Nicolls Road. The section east of Nicolls Road resumes at Horseblock Place and then joins Portion Road west of Waverly Avenue.

Horseblock Road then travels east-southeast through Farmingville (home of the historic Bald Hill Schoolhouse and Cotten Coverage Insurance Agency), intersecting Blue Point Road, Granny Road, and CR 83 (North Ocean Avenue) and then narrows down to two lanes eventually entering Medford, intersecting NY 112, the Long Island Expressway at exit 65, and CR 101 (Patchogue–Yaphank Road). It then enters southern Yaphank and Brookhaven, where it intersects CR 99 (Woodside Avenue, a road whose construction in the early 1970s lead to Horseblock Road's realignment) and then CR 21 (Yaphank Avenue), where it shares an interchange with Sunrise Highway (NY 27) before terminating at CR 80 (Montauk Highway) in Brookhaven.


The segment between Ronkonkoma and South Haven was built by the Works Progress Administration and gave the Portion Road and Horse Block Road southeast of Portion the dual name of "Farm to Market Road," in the hopes of giving farmers of southeastern Long Island an accessible road to western segments of Long Island.[3]

Though CR 16 has run consistently from Smithtown to Brookhaven since the mid-1960s, this wasn't always the case. Many segments have been part of other county roads.

Suffolk County 19.svg

East Lake Shore Terrace Drive and Portion Road used to be part of CR 19 from the Smithtown–Brookhaven Town Line to Waverly Avenue in Farmingville. In 1960, this terminus was moved to Patchogue–Holbrook Road.

Suffolk County 21A.svg

The construction of Sunrise Highway in 1957 lead to the realignment of Horseblock Road west of its original eastern terminus with South Country Road (former Montauk Highway) in South Haven. Because the interchange is shared with CR 21, the new alignment was originally designated as CR 21A.

Suffolk County 56.svg

Horseblock Road used to be a western extension of CR 56 between Victory Avenue, a frontage road along Sunrise Highway that begins at CR 46, in Brookhaven and Waverly Avenue in Farmingville. In 1964, it was moved only to Victory Avenue. Today that frontage road is unmarked.

Major intersections[edit]

The entire route is in Suffolk County.

Location mi[4] km Destinations Notes
Village of the Branch 0.00 0.00 NY 25 – Smithtown, Lake Grove
Nesconset 0.60 0.97 NY 347 (Smithtown Bypass) – Hauppauge, Port Jefferson
2.34 3.77 Nichols Road - Islandia, Lake Grove To Smith Haven Mall via Nichols Road northbound.
2.94 4.73 CR 93 southbound (Rosevale Avenue) / Gibbs Pond Road northbound - Ronkonkoma Northern terminus of CR 93
Lake Ronkonkoma 4.40 7.08 Ronkonkoma Avenue  – Lake Grove, Ronkonkoma Access to Ronkonkoma Train Station and Long Island MacArthur Airport via Ronkonkoma Avenue southbound.
5.07 8.16 CR 19 south (Patchogue Road) – Holbrook, Patchogue Northern terminus of CR 19
Holtsville 7.31 11.76 CR 97 (Nicolls Road) – Stony Brook, Blue Point to I-495 Partial cloverleaf interchange
7.77 12.50 Waverly Avenue - Holtsville, Patchogue
Farmingville 9.25 14.89 CR 83 (North Ocean Avenue) – Patchogue, Mount Sinai
Medford 10.64 17.12 NY 112 – Patchogue, Port Jefferson Access to Medford Train Station via NY 112 southbound.
11.76 18.93 I-495 (Long Island Expressway) – New York, Riverhead Exit 65 on I-495
11.87 19.10 Long Island Avenue Interchange
Yaphank 13.13 21.13 CR 101 – East Patchogue
14.43 23.22 CR 99 west (Woodside Avenue) – Holbrook Eastern terminus of CR 99
15.39 24.77 CR 21 (Yaphank Avenue) to NY 27 west – New York Eastbound access from CR 16 to NY 27 west.
15.55 25.03 CR 56 east (Victory Avenue) Western terminus of CR 56. Access to South Haven County Park.
15.63 25.15 NY 27 (Sunrise Highway) – New York, Montauk No access from CR 16 east to NY 27 west; exit 57 on NY 27
Brookhaven 15.90[4] 25.59 CR 80 (Montauk Highway) – Brookhaven, Shirley
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ "County Road System – County of Suffolk, New York" (PDF). Suffolk County Department of Public Works. December 29, 2005. Retrieved April 2, 2010. 
  2. ^ "Improvement of CR 16 from Ronkonkoma Avenue to CR 97, Nicolls Road". Suffolk County Department of Public Works. July 10, 2006. Archived from the original on July 20, 2006. Retrieved November 6, 2010. 
  3. ^ WLIM 1580 AM David Overton interview with Jack Ellsworth (Sachem Public Library)
  4. ^ a b Template:NYSDOT

External links[edit]

KML is from Wikidata