Whenever it becomes necessary to acquire any real property for use in connection with the location, relocation, construction, reconstruction, improvement and maintenance of any throughway or section thereof or for a service road, the Department of Transportation may, in its discretion, acquire an entire lot, block or tract of land if by so doing the interests of the owner and the state will be best served, even though the entire tract is not immediately needed for the highway proper. This provision and authority shall apply to and be effective whether the real property is acquired by purchase, agreement or exercise of the power of eminent domain.
Oregon Legal Code