Any municipality in this state, through its governing body, may enter into an agreement with any state agency, the board of county commissioners, or water resource board of the county in which the municipality is located, or a joint water resource board which jurisdiction includes the municipality, or any federal agency, or any combination thereof, for the improvement of streets, sewers, water mains, flood control projects, or of any of such facilities, under the terms of which the contract for such work is to be let by the state agency, the board of county commissioners, water resource board, joint water resource board, the federal agency, or any combination thereof, and for this purpose may create a special improvement district or districts. No such agreement may be entered into until and unless the governing body certifies that it has obtained authority in accordance with this section to issue improvement warrants to finance the amount that the municipality will be obligated to pay thereunder, over and above the amount of any bonds which have been voted and any other funds which are on hand and properly available for such purpose. If any portion of the cost is to be paid by the levy of special assessments, the governing body shall by resolution declare the necessity of the improvement, setting forth its general nature, the approximate amount or fraction of the cost which the municipality will be obligated to pay under the agreement, and the fact that this amount, or such lesser amount as the governing body may specify, is proposed to be paid by the levy of special assessments upon property determined to be benefited by the improvement. Any portion of the cost for which the municipality is obligated and which is not assessed upon benefited property or paid from other funds may be agreed to be paid by general taxation of all the taxable property in the municipality, if approval for the incurring of such debt is obtained and provision for the payment thereof is made in accordance with section 40-24-10. The resolution of necessity must be published once each week for two consecutive weeks in the official newspaper of the municipality and protests may be filed and their sufficiency to bar the improvement must be determined in accordance with sections 40-22-16 through 40-22-18. However, if under the terms of the resolution of necessity the portion of the cost of the project to be assessed upon benefited property does not exceed twenty-five percent of the total cost to be paid by the state agency, county, water resource board, joint water resource board, federal agency, and municipality, written protests by the owners of seventy-five percent of the property liable to be assessed for the improvement shall be required to bar further proceedings with reference thereto. At any time after the period for filing protests has expired and the protests filed, if any, have been heard and determined to be insufficient, the governing body may issue warrants on the fund of the improvement in the total amount for which the municipality is obligated under the agreement, and may cause to be certified to the special assessment commission that portion of the cost to be borne by the property owners within the district, and the assessment of such amount may be made and such warrants may be issued as in other cases provided for in chapters 40-23 and 40-24.