A multiple-vehicle accident slowed traffic on State Route 94 early Wednesday.
The collision involving 10 cars happened just before 6 a.m. where State Route 15 merges with westbound SR 94.
A Sig Alert was issued, reporting that the crash was blocking two lanes of traffic.
Drivers were backed up for approximately 10 miles on the southbound Interstate 805 according to the California Highway Patrol.
There were no fatalities officials said and the lanes were cleared for traffic before 8 a.m.