St. Marys River (Michigan–Ontario) arch bridge, takes road traffic across the river. Directly to the west is the Sault Ste. Marie International Railroad Bridge, which carries rail traffic on a single set of tracks. The Edison Sault Electric Hydroelectric Plant, located at the eastern end of the Sault Ste. Marie Power Canal which runs between Lake Superior and Lake Huron through the city south of the American locks, is one of the longest hydroelectric plants in the world at in length. The plant consists of 74 three-phase generators capable of generating 25 to 30 megawatts. It was completed in 1902. The hydro plant is
Sault Ste. Marie, Michigan Sault Ste. Marie, Michigan Sault Ste. Marie is a city in, and the county seat of, Chippewa County in the U.S. state of Michigan. It is situated on the northeastern end of Michigan's Upper Peninsula, on the Canada–US border, and separated from its twin city of Sault Ste. Marie, Ontario, by the St. Marys River. The city is relatively isolated from other communities in Michigan and is 346 miles from Detroit. The population was 14,144 at the 2010 census, making it the second-most populous city in the Upper Peninsula. By contrast, the Canadian Sault Ste. Marie is much larger, with