The incident was reported about 2:44 a.m. near Colfax Avenue, where the big rig and a white Hyundai sedan collided, according to a California Highway Patrol incident log. No injuries were reported.
The semi began leaking diesel fuel on the roadway after the impact, prompting the CHP to issue a Sigalert. Caltrans crews responded to the scene and used brooms and an absorbent to clean up the spill.
SIGALERT CANCELLATION IN STUDIO CITY: WB US-101 AT COLFAX AVE - ALL LANES OPEN— CHP PIO - LA County (@CHPsouthern) October 13, 2018
One westbound lane was intermittently opened during the cleanup. Eastbound traffic was unaffected.
All lanes were reopened as of 8:30 a.m., the Highway Patrol said.
A CHP spokesperson confirmed an arrest was made in the incident, but no other details were immediately available.
The cause of the collision is under investigation.