Oregon Revised Statutes Property Rights and Transactions § 105.760

(1) If consent is given by the governing body of any city to change any grade of any street as such grade has been established or maintained by the consenting city and pursuant thereto the Department of Transportation or a county changes the grade, the state or the county, whichever makes such change of grade, shall be liable for and shall pay just and reasonable compensation for any damage or injury to any real property abutting upon the road or street affected by the grade change.

(2) Any person having any right, title or interest in any such real property has a cause of action against the state or against the county to enforce payment of the compensation. Any such action may be commenced and maintained in the circuit court for the county in which the real property is situated. Any party to any such action has the right to appeal as in any other civil action from a judgment of any circuit court. Any person having or claiming any right, title or interest in such real property may join as party plaintiff or may intervene in any action involving the real property in which the interest is claimed.

(3) The trial circuit court shall, in its general judgment, apportion such just compensation as it may award among the various persons found by it to own or have some right, title or interest in such real property. The awarded compensation shall be apportioned according to the rules of law governing the distribution of awards made when real property is taken under the power of eminent domain.

(4) The liability of the state or the liability of the county, as the case may be, terminates wholly when it pays into court the sums determined by the circuit court to be just compensation. Any cause of action granted by this section is barred unless such action is commenced within six months after the change of grade is physically completed and accepted by the Department of Transportation or the county.