A hit-and-run crash on northbound Interstate 680 at Livorna Road caused major injuries and backed up traffic Friday morning, the Contra Costa Times reports.
A white box-truck sideswiped an Infiniti L30 sedan, sending the sedan into a tree and a ditch below at about 10:05 a.m., according to the California Highway Patrol.
The truck then left the scene and officers are looking for the vehicle and its driver.
Two lanes were closed because of the accident, which have since reopened.
Follow Patch for more information on this developing story.