(1) Each board may issue, negotiate, and sell coupon bonds on the credit of the county:
(a) to construct, improve, or acquire rights-of-way for public bridges;
(b) to refund, pay, and redeem optional, redeemable, or maturing bridge bonds when there are not sufficient funds available and it is considered in the best interests of the county to refund the bonds.
(2) The bonds must be issued as provided in 7-7-2201.