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New York Route 231

New York State Route 231 marker

New York State Route 231
Map of Suffolk County on Long Island with NY 231 highlighted in red
Route information
Maintained by NYSDOT
Length: 9.05 mi (14.56 km)
Existed: 1960s – present
Major junctions
South end: NY 27A in Babylon
  NY 27 in North Babylon
Southern State Parkway in North Babylon
I-495 in Dix Hills
North end: Northern State Parkway in Dix Hills
Location
Counties: Suffolk
Highway system
NY 230 NY 232

New York State Route 231 marker

New York State Route 231 (NY 231) is a north–south state highway located in Suffolk County, New York, in the United States. The route extends for 9.05 miles (14.56 km) from a partial interchange with NY 27A in Babylon to an interchange with the Northern State Parkway in Dix Hills. The southernmost 2 miles (3.2 km) of NY 231 is a limited-access highway known as the Babylon–Northport Expressway; the remainder of NY 231 is known as Deer Park Avenue.

NY 231 begins at an interchange with NY 27A (Montauk Highway) in Babylon. The route progresses northward around Hawleys Lake as a four-lane freeway. A short distance after NY 27A, NY 231 meets ramps from County Route 50 (CR 50, named John Street), but does provide service to the county road from either direction. After John Street, the freeway crosses over the Long Island Rail Road's Babylon Branch and crosses northward through a large residential district. After paralleling Madison Street in North Babylon, NY 231 intersects with NY 27 (the Sunrise Highway) in a full cloverleaf interchange. From NY 27, NY 231 heads northward and northwestward, intersecting with Hunter Avenue in North Babylon, where the freeway portion ends and the highway becomes an arterial boulevard. The route curves back to the north through the large commercial district, interchanging with CR 34 (Deer Park Avenue). Right after the interchange, NY 231 interchanges with the Southern State Parkway at a full cloverleaf in North Babylon.


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Wikipedia

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