ISLAND BEACH has REOPENED for swim areas, Beach Buggy access remains closed. New Jersey Department of Environmental Protection sent this bulletin at 08/05/2018 12:45 PM EDT August 5, 2018 ISLAND BEACH STATE PARK has reopened for swim areas, but remains closed for Beach Buggies. We hope you enjoy your visit. Island Beach State Park PO Box 37, Seaside Park, NJ 08752 Location: Route 35 South (Central Ave) & 24th Ave, Seaside Park 732-793-0506