Ohio Rev. Code § 727.41
Whenever the boundary line between two municipal corporations is located within or along the side lines of a street, avenue, or other public highway, such municipal corporations may enter into an agreement for the improvement of such street, avenue, or other public highway in such manner as the respective legislative authorities thereof determine. The agreement may provide for any of the improvements specified in section 727.01 of the Revised Code, and the cost thereof may be assessed upon the property specially benefited thereby, in the manner provided in such section, and to the same extent and subject to the same limitations as provided by sections 727.01 to 727.49 of the Revised Code. By the agreement, the cost of the entire improvement shall be apportioned between the two municipal corporations as their legislative authorities agree, and the legislative authority of each shall determine whether or not any portion of the cost to be paid by it shall be specially assessed or paid from other funds of the municipal corporation available for such purpose. Such agreement shall designate one of the municipal corporations to take exclusive charge of the details of construction of the improvement, including advertising for bids and awarding the contract. Such contract may be entered into by such municipal corporation when the necessary funds have been provided therefor, and when the amount to be paid by the other municipal corporation has been paid to the treasurer of the municipal corporation authorized to supervise such construction.
Bonds may be issued and sold in anticipation of the collection of the assessments by the municipal corporation levying the assessments, and bonds may likewise be issued and sold by either municipal corporation for the purpose of paying its share of such improvement under the conditions and limitations, and in the manner, provided by Chapter 133. of the Revised Code.
R.C. §727.41