If the remaining one-half of the cost of any bridge to be constructed as provided in section 24-08-05 is made up by an appropriation from any neighboring state or by any municipality in this state, to be expended under a commission or through any other agency, the board of county commissioners shall appoint a committee from its own number, of three or more, to meet such other municipal agency, confer with its members, and advise and assist in the accomplishment of such improvement in the best possible manner, and when the work is completed and approved jointly by such agency and committee, such approval to be in writing and duly reported to such board and recorded in the minutes thereof, the board shall direct the county auditor to draw the county auditor’s warrant upon the treasurer in favor of the contractor for the amount due the contractor from such county.