Sunken Meadow State Parkway

Sunken Meadow State Parkway
Sunken Meadow State Parkway highlighted in red
Route information
Maintained by NYSDOT
Length	6.19 mi[1] (9.96 km) 1.11 mi (1.79 km) within park boundaries
Existed	1954–present
History	Opened November 29, 1954 (to NY 25) April 1, 1957 (full length)
Restrictions	No commercial vehicles south of exit SM5E
Major junctions
South end	Northern State Parkway / Sagtikos State Parkway in Commack
Major intersections	NY 454 in Commack NY 25 in Commack NY 25A in Fort Salonga
North end	Sunken Meadow State Park in Fort Salonga
Location
Country	United States
State	New York
Counties	Suffolk
Highway system
New York Highways Interstate US State Reference Parkways

The Sunken Meadow State Parkway is a 6.19-mile (9.96 km) controlled-access parkway in Suffolk County, on Long Island, New York.

Located entirely within the Town of Smithtown, the Sunken Meadow begins at a cloverleaf interchange with the Northern State Parkway (exits 44–45) and the northern terminus of the Sagtikos State Parkway. It is a northern spur of the Sagtikos Parkway, which opened in September 1952. The northern end of the parkway is at a roundabout near the Long Island Sound in Sunken Meadow State Park. The parkway comprises the northern half of New York State Route 908K (NY 908K, an unsigned reference route), with the Sagtikos State Parkway forming the southern portion.

The Sunken Meadow Spur Parkway was first proposed in 1928 when the Town of Smithtown deeded over 400 acres (160 ha) of land to the Long Island State Park Commission via public vote. Due to land use restrictions in Nassau County, Sunken Meadow was the first park east of New York City, because provisions for a parkway would be near impossible to build. Construction of the parkway commenced after the Sagtikos opened in September 1952, with the interchange at the Northern State Parkway. The first portion opened to traffic in November 1954 from the Northern State/Sagtikos interchange to NY 25, with a slated completion in 1956. The parkway was completed in April 1957, opening on the 1st of that month. As part of the parkway opening, improvements were made to Sunken Meadow State Park, including expanded vehicle capacity and a longer boardwalk.

As is the case with most other parkways in New York, commercial vehicles are prohibited from using the Sunken Meadow, with an exception for the portion north of NY 25A.