Jackknifed big rig snarls commute on Hwy 242 in Concord

CONCORD, Calif. -- A big rig overturned on northbound state Highway 242 in Concord Thursday morning, causing about 90 gallons of diesel fuel to spill, according to the California Highway Patrol.

The crash was reported around 7:55 a.m. on northbound Highway 242 in the area of the Grant Street on-ramp.

TIPS: How do you recover from hydroplaning?

All northbound lanes of the highway were cleared after 9 a.m.

Check drive times and traffic maps.