The requirements for contracts and bids that apply to all county highway systems and highway districts of the state shall be subject to the provisions of chapter 28, title 67, Idaho Code, in concert with the provisions of any specific statute pertaining to the letting of any contract or the purchase or acquisition of any commodity or thing by any system or highway district by soliciting and receiving competitive bids, and shall not be construed as modifying or amending the provisions of any statute, nor preventing the district from doing any work by its own employees.
Idaho Code § 40-901