§ 116. Statement and approval of proposed work. Before any county road fund moneys are spent or obligated in any one year under article six, except as otherwise provided in this section, the county superintendent of highways shall prepare a statement of the roads on such map proposed to be constructed or reconstructed during such year. This statement must be approved by the board of supervisors of such county and shall show the location of the proposed road, the total mileage thereof and the mileage of the portion to be constructed or reconstructed in such year, the estimated cost of such construction or reconstruction, width, thickness and type. Such statement shall be made in triplicate and after final approval as hereinbefore specified one copy thereof shall be filed in the office of the board of supervisors of the county, one in the office of the county superintendent of highways and one in the office of the county treasurer. Upon recommendation of the county superintendent, the board of supervisors may authorize by resolution that a specific amount of said county road fund moneys may be used by the county superintendent for preliminary engineering and surveys to acquire necessary data for the preparation of said statement of the roads on such map proposed to be constructed or reconstructed.