Section 8330 Of Article 1. Authority From California Streets And Highways Code >> Division 9. >> Part 3. >> Chapter 4. >> Article 1.

. (a) The legislative body of a local agency may summarily vacate a street or highway that has been superseded by relocation.
  (b) A street or highway shall not be summarily vacated pursuant to this section if vacation would do either of the following:
  (1) Cut off all access to a person's property which, prior to relocation, adjoined the street or highway.
  (2) Terminate a public service easement, unless the easement satisfies the requirements of Section 8333.