A wreck involving an overturned semi shut down the three left lanes of the 210 freeway westbound near the Ocean View off-ramp for several hours on Saturday. Traffic was backed up about 4 miles to Foothill Blvd.
The crash happened around 11:20 Saturday morning when the big rig crashed into the center divider and flipped over. Initial reports indicated that the crash may have been caused by two cars that were racing.
One person was taken in for questioning.
CHP officials expect three lanes to remain closed through 7pm Saturday.