Section 28-7654 - Issuance of bondsA. The county board of supervisors is authorized to issue bonds secured by a pledge of bridge construction revenues.B. The county board of supervisors is authorized to issue bonds secured by a pledge of highway improvement revenues.C. Any bonds issued pursuant to this article may be issued in one or more series, bear the dates, be payable in the medium of payment and at the places, bear the rates of interest, including variable rates, carry the registration privileges and prior redemption provisions, be executed in the manner, contain the other terms, covenants and conditions and be in the form the board of supervisors prescribes. The bonds shall be sold at, above or below par in the manner as the board of supervisors determines.