After Interstate 215 (the northern portion of the Escondido Freeway) splits from I-15 in Devore, I-15 continues on a roughly SSW path through southern San Bernardino, and is named the Ontario Freeway. The Ontario Freeway crosses the Riverside County line at Ontario, and continues to its southern terminus at Limonite Avenue in unincorporated Riverside County. I-15 then assumes the name of the Corona Freeway. This freeway continues through southwestern Riverside County until its terminus at California State Highway 74 (the Ortega Highway) in Lake Elsinore; I-15 continues thereafter as the Temecula Valley Freeway.
The name "Corona Freeway" is, confusingly, sometimes applied to the Riverside County portion of California State Highway 71, which runs parallel to I-15 approximately 7 miles to the west; however, in 1991, the California Assembly passed legislation officially designating that route as a part of the Chino Valley Freeway.
CoronaFreeway segment is in purple, the Temecula Valley Freeway segment is in green, and the Escondido Freeway segment is in orange.
The name "CoronaFreeway" is, confusingly, sometimes applied to the Riverside County portion of State Route 71, which runs parallel to I-15 approximately 7 miles to the west.
This is because the original definition for the CoronaFreeway stated that it was "Routes 71, 91, and 15 from Route 10 West of Pomona to Route 215".
OntarioFreeway segment is in red, the CoronaFreeway segment is in purple, the Temecula Valley Freeway segment is in green, and the Escondido Freeway segment is in orange.
It is the principal north-south freeway through the fast-growing Inland Empire region, in the far eastern suburbs of Los Angeles.
After the Mojave Freeway crosses the Cajon Pass and enters the small town of Devore, it spawns a bypass route, Interstate 215 (the Escondido Freeway).