Number of Miles 1607 Montana - 249 miles North Dakota - 353 miles Minnesota - 260 miles Wisconsin - 351 miles Illinois - 81 miles Indiana - 45 miles Michigan - 276 miles Major Cities Along the Route Bismarck, North Dakota Fargo, North Dakota Minneapolis, Minnesota Saint Paul, Minnesota Madison, Wisconsin Milwaukee, Wisconsin Chicago, Illinois (Dan Ryan Expressway, Edens Expressway) Gary, Indiana Detroit, Michigan (Edsel Ford Freeway) Intersections with other Interstates Interstate 90 in Billings, Montana Interstate 29 in Fargo, North Dakota Interstate 35 in Minneapolis/St. Paul, Minnesota Interstate 90 in Tomah, Wisconsin. They stay joined until Madison, Wisconsin. Interstate 39 at Portage, Wisconsin. They stay joined for 30 miles. Interstate 43 in Milwaukee, Wisconsin Interstate 90 in Chicago, Illinois. They stay merged for a few miles. Interstate 55 in Chicago, Illinois Interstate 57 in Chicago, Illinois Interstate 80 in South Holland, Illinois. They stay joined until Portage, Indiana. Interstate 65 in Gary, Indiana Interstate 90 in Portage, Indiana Interstate 69 in Marshall, Michigan Interstate 96 in Detroit, Michigan Interstate 75 in Detroit, Michigan Interstate 69 in Port Huron, Michigan Spur Routes Bismarck, North Dakota - I-194 Minneapolis/St. Paul, Minnesota - I-394, I-494, I-694 Milwaukee, Wisconsin - I-794, I-894 Chicago, Illinois - I-294 Battle Creek, Michigan - I-194 Notes