RIVERSIDE (CNS) - A big rig and three other vehicles were involved in a crash on Interstate 215 Sunday that jammed traffic. The crash was reported at 9:33 a.m. on the northbound side of the freeway near Central Avenue, according to the California Highway Patrol. The wreck caused a large amount of debris to be strewn across the roadway, according to the CHP, and traffic was backed up through the 215/60 interchange. It was not immediately clear if anyone was injured. By 9:52 a.m., the CHP reported that the involved vehicles had been cleared into the center divider, though traffic delays persisted.