Long Island is situated in the middle of Boston Harbor, Massachusetts. The island is part of the City of Boston, and of the Boston Harbor Islands National Recreation Area. Prior to October 2014, access to the island was via a road over a 4,175-foot (1,273 m) causeway from the Squantum peninsula of North Quincy to Moon Island, and from there, over a 3,050-foot (930 m) two-lane steel bridge from Moon Island to Long Island. The bridge was officially called the Long Island Viaduct. The island is 1.75 miles (2.82 km) long and covers 225 acres (0.9 km2). Access to the causeway leading to Moon Island and Long Island is controlled by police at a guardhouse at its southern end, and permission to enter the island must be obtained in advance since it is a restricted area. In October 2014, all access to Long Island was cut off for the indefinite future since the then Mayor of Boston, Marty Walsh, took the warning of the Massachusetts Department of Transportation about the condition of the Long Island Bridge being unsafe. All those living on Long Island and being serviced by recovery programs or as guests in the homeless shelter were no longer able to go there or use it for services. They were abruptly relocated elsewhere on an emergency basis. The bridge to Long Island was demolished on March 23, 2015. The future uses of the island, its buildings and the bridge are still under discussion. - source: Wikipedia