Tex. Gov't Code § 2155.387
A state agency that purchases road construction materials may pay for road construction materials delivered in a vehicle that exceeds the maximum gross weight authorized by law for the vehicle an amount computed using the lesser of:
Added by Acts 1995, 74th Leg., ch. 41, Sec. 1, eff. Sept. 1, 1995.
Amended by Acts 1997, 75th Leg., ch. 165, Sec. 30.200, eff. Sept. 1, 1997.