Map of US highway 63 and family, and US 218

US 63 is represented by the purple line from Ashland WI to Ruston LA.

US 163 [I] (historic) is the red line from Des Moines to Oskaloosa IA. Originally US 63 followed that route; when it was rerouted to go due north from Oskaloosa, the old segment to Des Moines was renumbered as US 163.

US 163 is not shown on this map, because it's not a branch of US 63. You can view a map showing US 163 on my page for the US 91 family.

US 218 is also shown on this map: the blue line beginning in Keokuk IA. Its current northern terminus is in Owatonna MN; the red line extending north from there to St. Paul is the historic extent of US 218. This is a north/south branch route misnumbered as if it runs east/west, so I included it on this map to demonstrate how the highway would fit into the US 63 family, if it were to be assigned a number US x63. This is just one possibility that makes more sense than 218; I've also included the route on the maps for US 61 and US 65. You can also view the US 18 map, which shows US 218 with its implied family.