In addition to any other name prescribed in the Revised Code or otherwise, the portion of state route number seventy-three, running in an easterly and westerly direction between the intersection of state route number seventy-three and state route number seven hundred forty-one and the intersection of state route number seventy-three and interstate route number seventy-five in Warren county only, shall be known as the "Officer Bill Johnson Memorial Highway."
The director of transportation may erect suitable markers along the highway indicating its name.