Sts. & Hy. Code, § 31208

Whenever any property acquired for any of the purposes of this chapter, whether by agreement, grant, or eminent domain, either in fee or in any lesser estate or interest, is no longer necessary for use in connection with any improvement authorized to be constructed pursuant to this chapter, or whenever a lesser interest than is owned therein is sufficient for the construction, maintenance, and operation of any improvement, or whenever it is for any other reason in the public interest so to do, the property, any part thereof, or any interest therein may be leased, sold, exchanged, or otherwise disposed of or dealt with by the authority in the manner, upon such terms, and subject to such reservations as it deems necessary or desirable.