Thousand Islands Bridge Thousand Islands Bridge The Thousand Islands International Bridge () is an international bridge system over the Saint Lawrence River connecting northern New York in the United States with southeastern Ontario in Canada. Constructed in 1937, with additions in 1959, the bridges span the Canada–US border in the middle of the Thousand Islands region. All bridges in the system carry two lanes of traffic, one in each direction, with pedestrian sidewalks. The bridge is managed by an American company. The actual international border bridge crossing is a set of two parallel long bridges between Wellesley Island in the United States and
Leeds and the Thousand Islands Island, Halsteads Bay, Holland, Ivy Lea, Junetown, La Rue Mills, Lansdowne, Leeds, Legge, Long Point, Lyndhurst, Maple Grove, Mitchellville, Narrows, Oak Leaf, Outlet, Pooles Resort, Quabbin, Rockfield, Rockport, Sand Bay Corner, Seeley's Bay, Selton, Soperton, Sweets Corners, Taylor, Tilley, Union, Warburton, Washburns Corners, Waterton, Willowbank and Wilstead. Lansdowne, Ontario is a small town located just north of Ivy Lea, Ontario and 4 km north of Highway 401, at the intersection of Leeds and Grenville County Roads 3 and 34. It is a part of the township of Leeds and the Thousand Islands, Ontario. It can be accessed by former Kings