In Kings Park, the Sunken Meadow State Parkway bends northward, crossing under the Long Island Rail Road's Port Jefferson Branch and entering exit SM4. Exit SM4 is a cloverleaf interchange that serves CR 11 (Pulaski Road / East Northport Road). After the interchange with CR 11, the Sunken Meadow enters Fort Salonga as a four-lane parkway with a wide median, bending northeast into exit SM5. Exit SM5, the last on the Sunken Meadow, is a cloverleaf interchange with NY 25A (Fort Salonga Road). After crossing over NY 25A, the Sunken Meadow State Parkway enters Sunken Meadow State Park at a toll barrier in the middle of the interchange. The toll barrier serves as the northern terminus of the Sunken Meadow State Parkway, while the right-of-way continues north through Sunken Meadow State Park, terminating at a roundabout near the Long Island Sound.