Cal. Pub. Util. Code § 50180
The district may acquire, construct, own, operate, control or use rights-of-way, rail lines, buslines, stations, platforms, switches, yards, terminals, and any and all other facilities necessary or convenient for transit service within or partly without the district, underground, upon, or above the ground and under, upon, or over public streets or other public ways or waterways, together with all physical structures necessary or convenient for the access of persons and vehicles thereto, and may acquire any interest in or rights to the joint use of any or all of the foregoing; provided, that installations in any street, road or other property devoted to a public use shall be subject to consent of the governing body in charge of such public use.
Ca. Pub. Util. Code § 50180