I-10 also has parts designated as the Rosa Parks Freeway and the Sonny Bono Memorial Freeway. In the Greater Los Angeles area, it is known as the Santa Monica Freeway and the San Bernardino Freeway, linked by a short concurrency on I-5 ( Golden State Freeway) at the East Los Angeles Interchange. The segment of I-10 in California runs east from Santa Monica through Los Angeles, San Bernardino, and Palm Springs before crossing into the state of Arizona. Interstate 10 ( I-10) is a transcontinental Interstate Highway in the United States, stretching from Santa Monica, California to Jacksonville, Florida. I-10 / US 95 at Arizona state line in Ehrenberg, AZ