The California Freeway and Expressway System is a system of existing or planned freeways and expressways in the U.S. state of California.

It was defined by Article 2 (commencing with section 250) of Chapter 2 of Division 1 of the Streets and Highways Code.

[1] which was originally added by Chapter 1062 of 1959.

[2][3] The following is a list of roads defined by the Streets and Highways Code, sections 250–257, as part of the California Freeway and Expressway System.

[1] Some of the routes listed may still be in the planning stages of being fully upgraded to freeways or expressways.