California Code, Streets and Highways Code - SHC § 1813

(a) The provisions of Article 3 (commencing with Section 1160) of Chapter 4 of Division 2 for the construction or maintenance of county roads may be utilized within any city for the construction and maintenance of city streets. For the purpose of construction or maintenance of city streets under this section, all references in that Article 3 to counties and their officers and to county funds, taxes, and service charges shall be deemed to be references to cities, city officers, and city funds, taxes, and service charges.

(b) The legislative body of any city may consent to the inclusion within a permanent road division formed by a county of streets within the corporate limits of the city, and the board of supervisors of the county in which the city is located shall then have jurisdiction over all proceedings taken or to be taken under that Article 3 in the same manner and to the same extent as if the city streets were county roads.

(c) This section is an alternative to any other provision of law that provides for the construction or maintenance of city streets.