The petition must set forth:
(1) the particular road or roads to be opened, established, constructed, changed, abandoned, or discontinued;
(2) the general route thereof;
(3) the lands and owners affected;
(4) whether the owners who can be found consent thereto;
(5) where consent is not given, the probable cost of the right-of-way;
(6) the necessity for and advantage of the petitioned action.