Oregon Revised Statutes Highways, Roads, Bridges and Ferries § 374.317

An owner of real property abutting a state highway with an existing approach road that is presumed to have written permission under ORS 374.308 or that has an approach permit under ORS 374.310 is responsible for the cost and performance of maintaining the approach road, in accordance with the Department of Transportation's requirements, from the outermost edge of the highway pavement, shoulder or curb line to the right-of-way line, and shall maintain all portions of the approach road on the owner's property.