OAR 141-093-0150. Transportation-Related Structures - Authorized Activities

(1) Existing Structures. Widening, replacing, expanding use, maintaining and removing existing: (a) Roads; (b) Bridges; (c) Pedestrian paths; (d) Culverts; (e) Boat ramps; and (f) Airport runways and taxiways. (2) Integrally-Related Activities. Activities integrally related with existing roadway structures, such as geo-technical borings, signs, guardrails and maintenance of stormwater facilities. (3) Increase in Scour Protection. Providing larger footprint for new scour protection and bank stabilization associated with projects listed above. (4) Restoring Fluvial Processes. Restoration or enhancement of natural stream health, including fluvial processes, associated with projects listed above. (5) Fish and Wildlife Habitat Enhancement. Providing fish or wildlife passage or habitat in conjunction with transportation-related structures. (6) Grade Control. Installing grade control where necessary to prevent channel headcut migration for the projects listed above.