California State Route 214 was during the 1964 State Highway Renumbering out what had been US Route 91 and California State Route 18 in Los Angeles County and Orange County. California State Route 214 was defined as following Carson Street and Lincoln Avenue from California State Route 19/Lakewood Boulevard east to Interstate 5/Santa Ana Freeway. California State Route 214 was deleted from the State Highway System during 1981.
https://www.gribblenation.org/2023/06/former-california-state-route-214.html?m=1