Oregon Revised Statutes Public Lands § 271.140

The title to the street or other public area vacated shall attach to the lands bordering on such area in equal portions; except that where the area has been originally dedicated by different persons and the fee title to such area has not been otherwise disposed of, original boundary lines shall be adhered to and the street area which lies on each side of such boundary line shall attach to the abutting property on such side. If a public square is vacated the title thereto shall vest in the city.