The Sunken Meadow State Parkway (also known as the Sunken Meadow) is a 6.19-mile (9.96 km) long parkway in Suffolk County, Long Island, New York. Located entirely within the town of Smithtown, the parkway begins at a cloverleaf interchange with the Northern State Parkway (exits 44–45) and the northern terminus of the Sagtikos State Parkway. The parkway, which continues north, is a northern spur of the Sagtikos, which opened in September 1952. The northern end of the parkway is at the toll barrier in exit SM5 in the Kings Park section of Smithtown. From there, the road continues north through Sunken Meadow State Park to a roundabout at the Long Island Sound. 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.