It shall be the duty of the board of supervisors in case the election shall result in favor of the creation of the district, at its next regular meeting or any subsequent meeting, to appoint three commissioners, who shall be qualified electors of the district and real estate owners therein, who shall hold office for a term of four years from the time of their appointment and until their successors are appointed by the board of supervisors, whose duty it shall be to have the management and supervision of the construction and maintenance of the roads built under the provisions hereof, subject to the approval of the board of supervisors, and for their services shall be paid their actual expenses, not exceeding one hundred dollars each per annum. The board of supervisors may remove any commissioner, for cause or at pleasure, at any time and fill the vacancy thereby caused; and the board may, at any time after the roads within a district have been constructed by the proceeds of bonds sold, discontinue the commissioners, proceed to administer the fiscal affairs of the road district in the manner authorized by law, and make tax levies without recommendation of the commissioners on all taxable property in such district or districts. The commissioners may employ an attorney, if necessary, and pay him a reasonable compensation.