Missouri Revised Statutes Title XIV. Roads and Waterways § 226.798. Factors considered in designating a road or highway a scenic byway--rating system to be established

(1) Highway design which preserves and protects the natural beauty or scenery of the area;

(2) Significant scenic, natural, historical, cultural or recreational resources in the area;

(3) Adequate land area to accommodate safe enjoyment of scenic attractions;

(4) Compatibility of the scenic byway with recreational, aesthetic and environmental management needs of the area; and

(5) Presence of existing protected areas near, or adjacent to, the scenic byway, such as national forests or federal or state park land.