Ohio Rev. Code § 5534.72: Air Force Master Sgt. William L. McDaniel II Memorial Highway.

In addition to any other name prescribed in the Revised Code or otherwise, the portion of state route number o ne hundred twenty-one, running in a northeasterly and southwesterly direction between the intersection of that route and Weavers-Fort Jefferson road and the intersection of that route and New Madison-Coletown road in Darke county only, shall be known as the "Air Force Master Sgt. William L. McDaniel II Memorial Highway."

The director of transportation may erect suitable markers along the highway indicating its name.