(a) The commissioners court of a county may establish load limits for any county road or bridge only with the concurrence of the Texas Department of Transportation. A load limit shall be deemed concurred with by the Texas Department of Transportation 30 days after the county submits to the Texas Department of Transportation the load limit accompanied by supporting documentation and calculations reviewed and sealed by an engineer licensed in this state, though the Texas Department of Transportation may review the load limit and withdraw concurrence at any time after the 30-day period.
(b) The commissioners court may limit the maximum weights to be moved on or over a county road, bridge, or culvert by exercising its authority under this subsection in the same manner and under the same conditions provided by § 621.102 for the Texas Department of Transportation to limit maximum weights on highways and roads to which that section applies.

(c) The commissioners court shall record an action under Subsection (b) in its minutes.
(d) A maximum weight set under this section becomes effective on a road when appropriate signs giving notice of the maximum weight are erected by the Texas Department of Transportation on the road under order of the commissioners court.
(e) A vehicle operating under a permit issued under § 623.011, 623.071, 623.094, 623.121, 623.142, 623.181, 623.192, 623.212, or 623.321, as added by Chapter 1135 (H.B. 2741), Acts of the 83rd Legislature, Regular Session, 2013, may operate under the conditions authorized by the permit over a road for which the commissioners court has set a maximum weight under this section.