Fill slopes should not exceed a slope of 1.5 horizontal to 1.0 vertical. Road fills
shall be made on earth that has all topsoil or overburden removed. Fills shall be
made in six-inch lifts starting on a on a level bench cut into original ground and
compacted to a compaction rate of 95 percent standard proctor. Cut slopes should not
exceed a slope of one horizontal to one vertical. Cut slopes should be made to afford
driveway construction wherever applicable. These slopes are recommended maximums and
may be waived if topographic restraints are present, and if it is demonstrated that
a steeper cut slope can be effectively stabilized. For class C, D, or E roads, retaining
walls or other slope stabilization measures may be used to accommodate the heights
of cut or fill slopes provided that such measures be included in the approved construction
plans or preliminary plat. Further, such measures shall be outside of any required
shoulders adjacent to the road way, shall not obstruct sight distances, shall not
impede drainage, and that guard railing shall be required adjacent to walls in fill
slopes.
