Ohio Rev. Code § 5501.451
In accordance with section 5501.45 of the Revised Code, the director of transportation shall implement a program allowing, by lease or permit, the use of lands owned by the state and acquired or used for the state highway system or for highways or in connection with highways or as incidental to the acquisition of land for highways by persons erecting advertising devices on the property. The program shall be operated in accordance with guidelines in effect on January 1, 1996.
Nothing in this section shall prohibit or restrict the director from determining that property on which an advertising device is located has become necessary for state highway or recreation purposes and terminating a lease or permit. Nothing in this section shall require the director to maintain a lease or permit at a specific location or prohibit the director from modifying the terms of a specific lease or permit.
As used in this section "advertising device" has the same meaning as in section 5516.01 of the Revised Code.
R.C. §5501.451