Area overview - congestion in Norco, Chino Hills, Corona, Riverside 7:33 a.m.

Traffic is crawling on the northbound 15 Freeway at Fourth Street in Norco, the eastbound 91 Freeway at Adams Street in Riverside, the westbound 91 at Grand and Main Street in Corona and the southbound 71 Freeway at Euclid Avenue in Chino Hills.