Oregon Department of Forestry

Rule Rule 629-625-0310
Road Prism


Operators shall use variable grades and alignments to avoid less suitable terrain so that the road prism is the least disturbing to protected resources, avoids steep sidehill areas, wet areas and potentially unstable areas as safe, effective vehicle use requirements allow.


Operators shall end-haul excess material from steep slopes or high landslide hazard locations where needed to prevent landslides.


Operators shall design roads no wider than necessary to accommodate the anticipated use.


Operators shall design cut and fill slopes to minimize the risk of landslides.


Operators shall stabilize road fills as needed to prevent fill failure and subsequent damage to waters of the state using compaction, buttressing, subsurface drainage, rock facing or other effective means.

Last accessed
Jun. 8, 2021