The portion of Missouri Route 116 located in Clinton County, from its intersection with Center Street or State Highway A in the city of Lathrop, west to its intersection with Missouri Route 33, shall be designated as the "Sgt. Issac B. Jackson Memorial Highway". The department of transportation shall erect and maintain appropriate signs designating such highway, with the costs to be paid for by private donation.
§ 227.307, RSMo