Tex. Transportation Code § 252.213: CONTRACTS BY COMMISSIONERS COURT; PAYMENT.

(a) In a county that appoints one or more road superintendents, the commissioners court by contract may construct, grade, gravel, or otherwise improve a road or bridge.

(b) At the time the contract is made, the commissioners court shall direct the county treasurer to:

(1) transfer the amount of money stipulated in the contract to a particular fund; and

(2) keep a separate account of the money.

(c) The money may be used only for payment under the contract and may be paid only on the order of the commissioners court.

Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.