Ohio Rev. Code § 5552.07
A board of county commissioners or board of township trustees that adopts access management regulations under section 5552.02 of the Revised Code shall include in those regulations the designation of a board to hear and decide appeals when it is alleged that there is error in any order, requirement, decision, or determination made by an administrative official in the enforcement of the regulations. This appellate board may be the board itself acting in an administrative capacity, or some other board appointed by the board of county commissioners or board of township trustees, whichever is applicable. The regulations also shall authorize that appellate board to grant variances that are not contrary to the public interest from the terms of the regulations where, owing to special conditions, a literal enforcement of the regulations will result in unnecessary hardship, and so that the spirit of the regulations will be observed and substantial justice done.
R.C. §5552.07