(1) At its next regular or special meeting or in any case at a date within 30 days after filing of any petition, the board shall investigate the feasibility, desirability, and cost of granting the petition. The investigation must be sufficient to properly determine the merits or demerits of the petition.
(2) Only one member of the board and the county surveyor, or the county road supervisor if a county surveyor is not elected or appointed, shall make the investigation.
(3) After considering the petition and the results of the investigation, the board shall make an entry of its decision on the minutes.