When in the judgment of the board of directors of an irrigation district it is in the best interests of the irrigation district to issue its bonds for the purpose of refunding or paying outstanding indebtedness as provided in section 61-08-34, refunding bonds may be issued pursuant to resolutions duly passed at a regular or special meeting of the board of directors.

The refunding bonds may be sold at public or private sale and must be signed in the same manner as the bonds to be refunded or by the officers of the irrigation district as may be designated in the resolutions providing for their issuance.