John A. Blatnik Bridge
The John A. Blatnik Bridge is the bridge that carries Interstate 535 (I-535) and U.S. Highway 53 (US 53) over the Saint Louis River, a tributary of Lake Superior, between Duluth, Minnesota, and Superior, Wisconsin. The bridge is 7,975 feet (2,431 m) long and rises up nearly 120 feet (37 m) above the water to accommodate the seaway shipping channel.