When he was in the area in June 2012, Matt Roberds took this photo of the US 36-Missouri 110 sign assembly on northbound US 65 in Chillicothe (a wider-angle view is here). The C-KC sign, designating the Chicago-Kansas City Corridor, is also on the assembly. In January 2012, the Missouri Highways and Transportation Commission added the Missouri 110 designation to the Chicago-Kansas City Corridor on Interstate 35 and US 36.
Photo courtesy of Matt Roberds (taken June 2012)