It shall be the duty of the viewers to meet at the time and place specified in the order. After taking an oath or affirmation to faithfully and impartially discharge the duties of their appointments, respectively, they shall take to their assistance two (2) suitable persons as chain carriers and one (1) person as marker and proceed to view, survey, and lay out or alter the roads as prayed for in the petition, or as near the same as in their opinion a good road can be made with reasonable expense, taking into consideration the ground, convenience, and inconvenience and expense which will result to individuals as well as to the public if the road is established, or any part thereof, or altered as prayed for. In laying out or altering or establishing public highways, the highways shall be located as near as practicable on section and subdivision lines.