A few years ago LaSamana blocked the closest road to Long Beach. You may have to take the next left at the guard shack. The Gendarme will let you go through and you drive all the way to the other side to reach Long Beach. I would recommend you go to Plum Beach(Baie de Prunes) It is on the way to Long Beach. Beautiful beach You will see parking area on the right. Guard shack is there to protect the villas, but they let beach goers through.