Tex. Transp. Code § 364.023
The commissioners court of a county by the resolution or order providing for the issuance of bonds under this chapter or by the trust indenture securing those bonds may provide that the toll bridge be operated by an operating board if the court determines that the bridge could be better and more efficiently operated by the board. The operating board:
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.