ORS § 836.045
In the condemnation of property authorized by ORS 836.025, the Oregon Department of Aviation as authorized by the State Aviation Board shall proceed in the name of the state in the manner provided by ORS chapter 35. For the purpose of making surveys and examinations relative to any condemnation proceedings, it shall be lawful to enter upon any land in the manner provided by ORS 35.220, doing no unnecessary damage. Notwithstanding the provisions of any other statute, or the charter of any municipality, the department may take possession of any property to be condemned at any time after the commencement of the condemnation proceedings. The department shall not be precluded from abandoning the condemnation of any such property in any case where possession thereof has not been taken.
ORS 836.045