- 150 



slope. The best way to accomplish this is to grade material toward 

 the cut bank. Outslope only enough to divert water over the bank 

 (approximately 2 to 3 percent plus the slope gradient of the road 

 in percent). 



6. When removing culverts and bridges, be sure all fill material is 

 removed from below the high water line of the stream. All material 

 that is removed should be placed in a safe disposal area. The 

 remaining fill material should be left at a stable angle. 



7. Cross ditch the road tread in accordance with cross ditch designs 

 and cross-drain spacing guides applicable to the area. 



8. Revegetate the road surface and areas disturbed by road closure 

 operations along with any other areas of exposed soil. Use all 

 revegetation procedures necessary (including mulching) to stabilize 

 the site. Break up road surface by ripping where compaction may deter 

 revegetation. 



9. Remove fill material from any area where mass failure is possible 

 in the future. 



