Saint Louis River (Lake Superior tributary) in the context of "Richard I. Bong Memorial Bridge"

Superior (Ojibwe: Gete-oodenaang) is a city in Douglas County, Wisconsin, United States, and its county seat. The population was 26,751 at the 2020 census. Superior and nearby Duluth, Minnesota, sit at the western tip of Lake Superior and together form the Twin Ports, a major Great Lakes harbor.

Bordered by Saint Louis, Superior, and Allouez bays, the city is framed by two rivers: the Nemadji and the Saint Louis. Superior is at the junction of U.S. Route 2 and U.S. Route 53 immediately north of, and adjacent to, both the Village of Superior and the Town of Superior. It is an industrial city, with ship harbors along two sides, several large rail yards, an oil refinery, and a shipyard. Superior and neighboring Duluth feature museum ships (SS William A. Irvin in Duluth and SS Meteor in Superior), devoted to the local maritime heritage. Superior was the final port of call for SS Edmund Fitzgerald before her sinking on November 10, 1975.

The Duluth MN–WI Metropolitan Area, commonly called the Twin Ports, is a small metropolitan area centered around the cities of Duluth, Minnesota and Superior, Wisconsin. The Twin Ports are located at the western part of Lake Superior (the westernmost part of North America's Great Lakes) and together are considered one of the larger cargo ports in the United States. The Twin Ports are close to many natural attractions such as the North Shore, the North Country National Scenic Trail, the Apostle Islands, and the Superior National Forest.

The area is home to two long bridges: the Richard I. Bong Memorial Bridge (carrying U.S. Route 2) and the John Blatnik Bridge (carrying Interstate 535 and U.S. Route 53). Each bridge reaches across more than 1.5 miles (2.5 km) across the mouth of the Saint Louis River. The Aerial Lift Bridge was constructed in 1905 and is on the National Register of Historic Places. It must be raised each time a vessel enters or leaves Duluth's harbor; the inlet on the Wisconsin side is not similarly obstructed.

The Fond du Lac Indian Reservation (or Nah-Gah-Chi-Wa-Nong (Nagaajiwanaang in the Double Vowel orthography), meaning "Where the current is blocked" in the Ojibwe language) is an Indian reservation in northern Minnesota near Cloquet in Carlton and Saint Louis counties. Off-reservation holdings are located across the state in Douglas County, in the northwest corner of Wisconsin. The total land area of these tribal lands is 154.49 square miles (400.1 km). It is the land-base for the Fond du Lac Band of Lake Superior Chippewa. Before the establishment of this reservation, the Fond du Lac Band of Lake Superior Chippewa were located at the head of Lake Superior, closer to the mouth of the Saint Louis River, where Duluth has developed.

US Highway 2 (US 2) is a part of the United States Numbered Highway System that runs from Everett, Washington, to St. Ignace, Michigan. In Wisconsin, the highway enters runs east–west across the northwestern part of the state and re-enters the state in the northeast part. It runs from the Richard I. Bong Memorial Bridge over the Saint Louis Bay at Superior, where it enters from Minnesota, east to the Michigan state line near Hurley. Further east, US 2 re-enters Wisconsin from Michigan in Florence County and briefly traverses that county before re-entering Michigan. US 2 is a Wisconsin Corridors 2020 Connecting route east of its concurrency with US 53. The section concurrent with US 53 is a Wisconsin Corridors 2020 Backbone route.

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. It was dedicated on December 2, 1961, but was renamed for Congressman John Blatnik on September 24, 1971, to commemorate Blatnik's role in making the bridge a reality. The Blatnik Bridge replaced a swinging toll bridge around the same location that carried both automobile and rail traffic.

The bridge was widened and the substructure was strengthened between 1992 and 1993 to accommodate hard shoulders. The Blatnik Bridge was reduced to two lanes temporarily in 2008, after it was discovered in a bridge inspection that the 1990s upgrades to the Blatnik Bridge had added weight beyond the load limit for gusset plates in eight different locations. This was similar to the gusset plates that caused the I-35W Bridge in Minneapolis to collapse on August 1, 2007. The Blatnik Bridge was reduced to two lanes temporarily until the gusset plates could be strengthened.

Interstate 535 (I-535) is a 2.78-mile-long (4.47 km) auxiliary Interstate Highway spur route of I-35 in the US states of Minnesota and Wisconsin. It is paired with U.S. Highway 53 (US 53) along its entire route. The Interstate was part of the original 1956 Interstate Highway System and was completed in 1971. Since then, weight limits have been added to the Blatnik Bridge that carries the highway over Saint Louis Bay between Superior, Wisconsin, and Duluth, Minnesota.