Southern State Parkway

Southern State Parkway
Southern State Parkway highlighted in red
Route information
Maintained by NYSDOT
Length	25.53 mi[1] (41.09 km)
Existed	1927[2]–present
Restrictions	No commercial vehicles
Major junctions
West end	Belt Parkway / Cross Island Parkway in Valley Stream
Major intersections	Meadowbrook State Parkway in North Merrick Wantagh State Parkway in North Wantagh NY 135 in Wantagh Robert Moses Causeway in West Islip
East end	Sagtikos State Parkway / Heckscher State Parkway in West Islip
Location
Country	United States
State	New York
Counties	Nassau, Suffolk
Highway system
New York Highways Interstate US State Reference Parkways

The Southern State Parkway (also known as the Southern State or Southern Parkway) is a 25.53-mile (41.09 km) controlled-access parkway on Long Island, New York, in the United States. The parkway begins at an interchange with the Belt and Cross Island parkways in Elmont, in Nassau County, and travels east to an interchange with the Sagtikos State Parkway in West Islip, Suffolk County, where it becomes the Heckscher State Parkway. The Southern State Parkway comprises the western portion of unsigned New York State Route 908M (NY 908M), with the Heckscher Parkway occupying the eastern section.

Construction of the highway, designed by Robert Moses, began in 1925. The first section of the parkway opened in 1927. It reached its original eastern terminus (Bay Shore Road) in 1949 and was extended to its current eastern terminus in 1962.