Today’s road trip focuses on US 36, a road described in the press release for the Great Renumbering as “now known as State Road 31 (the Rockville Road) from Indianapolis straight west through Danville, Rockville and Montezuma to the Indiana-Illinois state line directly west of Montezuma. The section west of Montezuma is one that will be added to the state system soon. (Incidentally, this is the only federal road that begins in Indianapolis.)”
I covered more of the history of this road here.