The Thousand Islands Bridge is an international bridge that goes over the Saint Lawrence River. It connects the north part of New York in the United States with south east part of Ontario in Canada. It was made in 1937. Builders added parts in 1959. The bridge goes over the edge that Canada and United States share in the middle of the Thousand Islands area. It gets its name from the name of the area. The bridge is governed by the Thousand Island Bridge Authority, an agency that works around the world.