Ohio Rev. Code § 5534.153: First Lieutenant Gerald B. Greendyke Memorial Highway.

In addition to any other name prescribed in the Revised Code or otherwise, the northbound and southbound lanes of state route number forty-nine between the northernmost intersection of that route and Heritage road and the intersection of that route and Arcanum Bears Mill road, in Darke county, shall be known as the "First Lieutenant Gerald B. Greendyke Memorial Highway."

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