The interchange comprises five freeway segments (i.e. there are five freeway 'paths' of travel into the complex). The three freeways that intersect here are
I-10 (
San Bernardino Freeway),
SR 57 (
Orange Freeway), and
SR 71 (
Chino Valley Freeway), though not all traffic movements are accommodated: from 57 North, 71 South is not available; from 71 North, 10 East and 57 South are not available, and from 10 West, 71 South is not available. Occasionally
Kellogg Hill is used to describe the interchange; however, most traffic reporters properly describe Kellogg Hill as the actual hill that the San Bernardino Freeway climbs between
West Covina and the Kellogg Interchange. This hill is often backed up due to slow trucks, especially on the westbound side where there is no additional truck lane. The crest of the hill is near the Via Verde onramp in San Dimas. ==History==