Why does the 15 freeway become a state route and not remain as an interstate south of Interstate 8 in San Diego?

California Highway Patrol officers and the San Bernardino County Fire Department responded to a fatality on the westbound ...

SAN BERNARDINO, CA (October 24 ... The incident happened around 1:59 a.m., just east of the Interstate 10 interchange on October 15th. At this time, the events leading up to the collision remain ...