1. The said viewers and engineer shall make a report of their work, as required in section 243.080, with the maps, profiles, schedules, estimates and other information, together with an itemized bill of costs made in the proper discharge of their duties and shall file this report with the clerk of the county commission within thirty days after making said surveys and estimates.

2. Any and all persons whose lands may be affected by the improvement may appear before the viewers and freely express their opinions on all matters pertaining thereto.

3. If any engineer or viewer shall die or fail or refuse to qualify and serve as such, the county commission may appoint some other person having the prescribed qualifications, who shall, before entering upon the discharge of his duties, take the oath prescribed by this chapter.