Ohio Rev. Code § 4582.18
Bonds of a port authority issued pursuant to sections 4582.01 to 4582.17 of the Revised Code are lawful investments of banks and trust companies with approval of the superintendent of banks, of savings and loan associations, of the bond retirement funds or the sinking funds of municipal corporations, boards of education, port authorities, and counties, of the administrator of workers' compensation, of the retirement board of the state teachers retirement system, of the retirement board of the state public school employees retirement system, of the retirement board of the public employees retirement system, and of domestic life insurance companies and domestic insurance companies other than life, and shall be acceptable as security for the deposit of public moneys.
R.C. §4582.18