Ala. Code § 45-31-130.10: Inspection and Approval of Materials, Supplies, Etc., Prior to Payment.

It shall be the further duty of the county engineer to inspect all materials, machinery, equipment, and supplies purchased by the county for use on public roads, bridges, and ferries, when the same is delivered, and the same shall neither be accepted nor paid for without its first having been approved by him or her and any deviation shall be reported by the engineer to the commission.