In addition to any other name prescribed in the Revised Code or otherwise, that portion of the highway known as state route number seventy-three, commencing at the intersection of that route and state route number four and proceeding in a northeasterly direction to the Warren county boundary in the municipal corporation of Middletown, shall be known as the "LCpl. Billy D. Spencer Memorial Highway."
The director of transportation may erect suitable markers along the highway indicating its name