Jackknifed big rig blocking lanes on both sides of 210 Freeway in Azusa

AZUSA, Calif. (KABC) -- A jackknifed semi-truck shut down several lanes on both sides of the 210 Freeway in Azusa Friday morning.

The semi crashed into the center divider on the westbound side of the freeway near Vernon Avenue around 7:50 a.m., according to the California Highway Patrol's traffic log. That caused the front portion of the big rig to crash over onto eastbound lanes.

AIR7 was over the scene where what appeared to be oil, rocks and debris spilled across some lanes.

At least four westbound lanes and one eastbound lane were expected to remain blocked off until further notice while crews worked to clear the wreck.

DEVELOPING: We will add more details to this report as they become available.