California State Route 215 was a short-lived state highway which existed in the Los Angeles Metropolitain area after the 1964 State Highway Renumbering. California State Route 215 was aligned from US Route 60 at 5th Street in Pomona north to US Route 66 near Claremont via Garey Avenue. California State Route 215 came to be after California State Route 71 was bisected in Pomona due to relinquishment of a portion of Garey Avenue due to the opening of a portion of the Corona Freeway (now Chino Valley Freeway) during 1958. California State Route 215 was deleted by the Legislature during 1965.
The history of California State Route 215
The 1936-1937 Division of Highways Map displays California State Route 71/LRN 77 south of Pomona bypassing Chino via an extension of Garey Avenue. The new bypass of Chino tied into Merrill Avenue south of the city of limit of Chino directly towards LRN 177.
The Temescal Freeway name was short lived as the corridor was announced as having been named the "Corona Freeway" in the November/December 1958 California Highways & Public Works. The Corona Freeway name was selected by the California Highway Commission on July 23, 1958. The Corona Freeway corridor is noted to have been selected by the California Highway Commission during 1947 between the Los Angeles County line and the US Route 395 Escondido Freeway.