Tex. Transp. Code § 223.009
A contract may provide for partial payments to the contractor.
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.
Acts 2007, 80th Leg., R.S., Ch. 313 (H.B. 2075), Sec. 1, eff. June 15, 2007.