Ohio Revised Code Title LV. Roads Highways Bridges § 5531.04

The director of transportation may co-operate with the United States or any department or agency thereof in carrying out provisions of the “Defense Highway Act of 1941” and any amendments thereof or supplements thereto. Such co-operation shall follow the procedural provisions of the Revised Code, applicable to the state highway system. Acts of co-operation in connection with projects not upon the system shall place no obligation of maintenance upon the director. Any expenditures of money by the director in connection with co-operation authorized by this section shall be payable from any funds available to the director.