A double trailer carrying gravel overturned on the 10 Freeway in Pomona early Wednesday, prompting the California Highway Patrol to issue a SigAlert that was in effect for several hours.
The semi overturned on the westbound 10 Freeway near Towne Avenue after it was involved in a two-vehicle collision just before 2:00 a.m., spilling its contents into the roadway, according to CHP Officer Alex Rubio.
One person was taken to a hospital for a blood test, Rubio said.
All lanes were blocked as a result of the crash, and a SigAlert was issued around 2:15 a.m., according to the CHP’s incident log.
It was canceled shortly before 6:00 a.m., the CHP tweeted.
The cause of the collision was under investigation.
KTLA’s Crystal Garcia and Justin Burton contributed to this report.