A semi-car crash on northbound Interstate 5 just south of state Route 512 caused a 13-mile backup Monday afternoon and took three hours to clear.
The State Patrol said the crash happened about 3:30 p.m. when a car slowed to change lanes, which caused another car to slow and a semi to hit the vehicles. The cause was being investigated. Four people were injured, one seriously, the State Patrol said. The wreck was cleared by 6:30 p.m., at which point there was still about a 10-mile backup, according to the state Department of Transportation.