A one-hour Sigalert is in effect at Ortega Highway on the southbound 5 Freeway.
A solo-vehicle crash caused a car to roll, landing on its roof in the right lane of the freeway just after 1:55 p.m. Sunday, according to the California Highway Patrol.
Traffic on the freeway is likely to be backed up until about 3 p.m., and the sigalert will remain in effect until then, according to authorities.
