Mississippi Code Title 19. Counties and County Officers § 19-13-11

A board of supervisors shall not empower or authorize any one or more members of such board, or other person, to let or make contract for the building or erection of public works of any description, or for working public roads, in vacation or during a recess of said board, except as provided in Title 65 of the Mississippi Code of 1972 in cases of emergency when a bridge or road has been or is about to be damaged by floods or otherwise, and in other special cases. All other contracts shall be made and approved by said board in open session, and it shall be the duty of the board of supervisors to accept the lowest responsible bid for the erection or construction of all public buildings, bridges or public works, or for the execution of any other contract. Any bidder will be deemed responsible who will enter into bond, with sufficient sureties, according to law, to be approved by said board, in double the amount of the bids made by such bidder for the prompt, proper and efficient performance of his contract. All contracts made in violation of any of the provisions of law shall be void.