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Corona Freeway Signed as Interstate 15 Major cities/towns: Norco Corona Lake Elsinore Direction: North-South Southern California freeways

Interstate 15; the Mojave Freeway segment is highlighted in light blue, the Ontario Freeway segment is in red, the Corona Freeway segment is in purple, the Temecula Valley Freeway segment is in green, and the Escondido Freeway segment is in orange.

The Corona Freeway is a freeway traveling through Riverside County, California. It is signed as Interstate 15 along its entire length.

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 State Route 71, which runs parallel to I-15 approximately 7 miles to the west. This is because the original definition for the Corona Freeway, as named by the State Highway Commission on July 23, 1958, stated that it was "Routes 71, 91, and 15 from Route 10 West of Pomona to Route 215".^[1] What is now I-15 from SR 91 south to I-215 was once part of SR 71. However, in 1993, the California Assembly passed legislation officially designating that route as a part of the Chino Valley Freeway, which effectively amended the Corona Freeway's definition to read "from Route 91 to Route 215".^[2]

Despite the change, guide signs on I-10 eastbound and SR 57 southbound at the Kellogg Interchange in Pomona still refer to SR-71 as the "Corona Freeway".

Communities along the Corona Freeway include:

• Norco
• Corona
• Lake Elsinore

Freeways intersecting the Corona Freeway include:

• Ontario Freeway
• Riverside Freeway
• Temecula Valley Freeway

1. ^ 2006 Named Freeways, Highways, Structures and Other Appurtenances in California. Caltrans, 69. Retrieved on 2007-03-28. 
2. ^ Ib. at 67