Cal. Sts. & High. Code § 835

Every owner or operator of a highway bridge which is open to use by the public, other than one owned or operated by any state or federal agency, city, or county, shall, on or before January 1, 1991, notify the city or county, or both, in which the bridge is located, of the existence of the bridge and its location, date of construction, and length and width in feet.