Oregon Revised Statutes Highways, Roads, Bridges and Ferries § 368.116

(1) Whenever in the location, relocation, construction or betterment of a public road, a county governing body determines that it is necessary to locate, relocate or construct the public road, or any part thereof, upon the right of way of a railroad company, the county may negotiate and agree with the railroad company for the right to use or occupy the right of way, or any portion necessary for public road purposes.

(2) If agreement cannot be reached, then the county governing body may acquire the right of way by exercise of the power of eminent domain under ORS chapter 35.

(3) Nothing in this section authorizes the use or occupancy of the railroad right of way which would interfere with the operation of the railroad or its necessary appurtenances, taking into consideration the use of the railroad right of way by the company for yards, terminals, station grounds and necessary additional trackage, or which would jeopardize the safety of the public.