Upon examining the preliminary plans on a road project, the soil and water conservation district commissioners may review each road project for which a drainage structure is required. The soil and water conservation commissioners shall ascertain whether or not the proposed erosion control or runoff control structure is suitable to reduce the velocity of runoff, reduce gully erosion, or provide for sedimentation or other improvement that would enhance soil conservation. The soil and water conservation commissioners shall also ascertain whether any other aspect of the road construction will affect soil and water conservation.