Great Lakes Waterway River between Huron and Erie. Usually, one or more U.S. Coast Guard icebreakers help keep the water passage open for part of the fall and early winter, although shipping usually ceases for two to three months thereafter. The Great Lakes Waterway is co-administered by the governments of Canada and the United States of America. The waterway allows passage from the Atlantic Ocean to the inland port of Duluth on Lake Superior, a distance of and to Chicago, on Lake Michigan, at . Together with the Saint Lawrence Seaway, the Waterway allows both ocean-going vessels and the ore, grain and coal-bearing
Duluth, Minnesota Wisconsin, to International Falls, Minnesota, and U.S. Highway 2, which stretches from Everett, Washington, to St. Ignace, in the Upper Peninsula of Michigan. The southwestern part of the city has Thompson Hill, where travelers entering Duluth on I-35 can see most of Duluth, including the Aerial Lift Bridge and the waterfront. There are two freeway connections from Duluth to Superior. U.S. Highway 2 provides a connection into Superior via the Richard I. Bong Memorial Bridge; and Interstate 535 is concurrent with U.S. 53 over the John Blatnik Bridge. Many state highways serve the area. Highway 23 runs diagonally across Minnesota,