Mo. Rev. Stat. § 227.520: "Discover More on Route 54" Highway designated for a portion of U.S. Highway 54 from Kansas/Missouri state line east to Missouri/Illinois state line.

The portion of U.S. Highway 54 from the Kansas/Missouri state line east to the Missouri/Illinois state line shall be designated the "Discover More on Route 54" Highway. The department of transportation shall erect and maintain appropriate signs designating such highway with the cost to be paid for by private donations.