Location: Southern State Pkwy and Deer Park Ave, West Islip Reassurance shield after Deer Park Avenue. Location: Southern State Pkwy and Deer Park Ave, West Islip After Deer Park, we’ll quickly approach the end of the Southern State, with the Bob Moses Causeway coming up in a mile, followed by the Sagtikos Parkway and the … Continue reading Southern State Parkway, NY-231 to Robert Moses Cswy