Oregon Revised Statutes Highways, Roads, Bridges and Ferries § 384.130

(1) The Department of Transportation may fix, alter and establish from time to time the rate of ferriage to be levied and collected, and may, in its judgment, whenever circumstances warrant and require, alter or change any such rate.

(2) Whenever the Department of Transportation grants a license to keep and operate a ferry across any stream, river, bay, arm of the ocean or other body of water, the department shall establish the rates of ferriage which may be lawfully demanded for the transportation of persons and property across the body of water, having due regard to the width, situation and location of the body of water and the damages and difficulties incident to the operation of the ferry.