85-8-361. Contracts. In all cases when the work to be done at any one time under the direction of the commissioners will, in their opinion, cost more than $15,000, the work must be awarded to the lowest responsible bidder. The commissioners shall advertise for sealed bids, by notice published in a newspaper published in the county in which the petition is filed, and may advertise in one or more newspapers published elsewhere. If there is no newspaper published in the county in which the petition is filed, the commissioners shall advertise in a newspaper published in an adjoining county. The notice must specify the time and place when and where the bids advertised will be opened, the kind of work to be contracted for, and the terms of payment. The commissioners may award contracts if in their judgment the contracts are necessary and shall reserve the right to reject any and all bids.