Ohio Rev. Code § 5533.10: George Washington Highway.

The highway known as United States route number fifty and alternate fifty, extending across the entire southern portion of the state through the counties of Washington, Athens, Vinton, Ross, Highland, Brown, Clermont, and Hamilton, and through the municipal corporations of Marietta, Belpre, Athens, Chillicothe, Hillsboro, and Cincinnati shall be known as the "George Washington Highway."

The director of transportation shall erect suitable uniform markers upon such highway indicating the name thereof, said markers to be twelve inches by eighteen inches with background of white enamel, bearing in black enamel the bust of George Washington and the words, "George Washington Highway."