After crossing under the multitude of lanes that make up the interchange and the Grand Central Parkway, the Cross Island Parkway crosses under Douglaston Parkway and enter Alley Pond Park. The Cross Island parallels the Douglaston Parkway northwest for a stretch, entering exit 30, a trumpet interchange with the Long Island Expressway (I-495) in Alley Pond Park. The parkway parallels Alley Creek as it bends further to the northwest, entering exit 31, a partial cloverleaf interchange with NY 25A (Northern Boulevard) and the Alley Pond Environmental Center. Past the junction, the highway continues on a northwestward track as it passes under the Port Washington Branch of the Long Island Rail Road and begins to run along the western edge of Little Neck Bay.