LOS ANGELES – Traffic on the 5 Freeway through Sun Valley was impacted for hours Tuesday morning after a crash involving a tractor-trailer.

The accident was reported shortly before 4 a.m. when the big rig overturned after apparently trying to swerve past a stalled vehicle near Lankershim Boulevard, according to the California Highway Patrol.

Video showed the semi, believed to be hauling groceries, sprawled across all lanes of traffic except the carpool lane.

The driver was taken to a local hospital in unknown condition following the crash. At least one other damaged vehicle, possibly the initial stalled vehicle, could be seen on the freeway but it was unclear if anyone was injured.

A SigAlert was issued to close all northbound lanes at 4:21 a.m.

Two lanes of travel were opened later in the morning after crews shifted the big rig toward the shoulder, however two lanes were still blocked as of 8 a.m.