Oregon Revised Statutes Highways, Roads, Bridges and Ferries § 374.430

The county court or board of county commissioners may commence and prosecute to final determination any suit, action or proceeding which in its judgment is necessary to enjoin and prevent any person, whether acting individually or by agent, from entering upon or departing from any throughway under its jurisdiction, mentioned in ORS 374.420, at any location, for any use or in any manner not authorized by any grant of a right of access, as provided in ORS 374.425.