U.S. 65
When I found out that US 65 went into the Twin Cities, I suddenly hatched an idea to bring it back there and beyond.

From its northern terminus in Albert Lea, MN, US 65 would use MN 13 to Burnsville.  After multiplexing with I-35W into downtown Minneapolis, it would jump onto MN 65 and follow all the way to its terminus in Littlefork.  This would make Highway 65, as they like to call it in Minnesota, one continuous U.S. route.