La. Stat. tit. 33 § 3984
Except in the case of joint projects undertaken as provided and authorized by Section 3983(B) hereof, the governing authority of the district, or its authorized officer or agent, shall receive bids on the date and at the place and hour named in the notice calling for bids and shall there publicly open and tabulate the bids. The contract shall thereafter be awarded to the lowest responsible bidder who can furnish satisfactory security. The governing authority may, however, reject any and all bids, and at any time, within a period of thirty (30) days from the date of the reception and opening of the bids, award the contract for the work without further advertisement, provided that no contract shall be let for an amount greater than that specified in the lowest sealed bid received from a responsible bidder. The contract awarded under the provisions of this Sub-part shall be authorized by resolution authorizing the chief executive officer of the governing authority to execute the contract for, on behalf of, and in the name of the district. It shall not be necessary to set forth the contract in full in the resolution, but it shall be sufficient if the resolution refers to a copy of the contract on file in the office of the clerk or secretary where it is available for public inspection. The resolution shall be published in one issue of the official journal of the district, and a certified copy thereof shall be filed with the clerk of court of the parish in which the district is located and shall be by him duly recorded in the mortgage records of the parish. Where joint street and sewer projects are undertaken, bids shall be taken, and received, and the contract for such joint project awarded by the agency carrying out the street or road improvements, all in strict accordance and compliance with the provisions of law applicable to such street or road improvements.
La. R.S. § 33:3984