Okla. Stat. tit. 69 § 3001
Any county or combination of cities, counties or towns, by resolution of their governing boards, may jointly create a public trust for the purpose of planning, financing, constructing, maintaining and operating a toll expressway upon the locations now or hereafter authorized by Section 1705 of Title 69, Oklahoma Statutes, and the state, or any county, municipality, political or governmental subdivision or governmental agency of the state or any combination thereof may be the beneficiary of such trust; provided that no funds of said beneficiary derived from sources other than the trust property, or the operation thereof, shall be charged with or expended for the execution of said trust, except by express action of the legislative authority of the beneficiary first had. The officers or any other governmental agencies or authorities having the custody, management or control of any property, real or personal or both, of the beneficiary of such trust, or of such a proposed trust, which property shall be needful for the execution of the trust purposes, hereby are authorized and empowered to lease such property for said purposes, after the acceptance of the beneficial interest therein by the beneficiary as hereafter provided, or conditioned upon such acceptance.
Okla. Stat. tit. 69, § 3001