Miss. Code § 31-5-39
On or before the date and time established to receive bids for any contract related to the construction of any building, highway, road, bridge or other public work or improvement by the State of Mississippi, its agencies, departments, institutions, or instrumentalities of the state or political subdivisions of the state, such entity shall establish a cost estimate for the project. The cost estimate shall reflect the total amount of funds allocated to the project, including the specific amount allocated for construction. Additional funds may be allocated to a project at any time, including for purposes of awarding a contract to the lowest and best bidder. Additional funds may not be allocated after the date and time established for the receipt of bids for the purpose of increasing negotiation authority.
Miss. Code § 31-5-39