Last Updated on January 19, 2023 by C-CAR
UPLAND >> At least three people, including two pregnant women, were injured in a multi-vehicle crash involving a jack-knifed tractor trailer on the eastbound 10 Freeway at Mountain Avenue Wednesday morning, according to the California Highway Patrol.
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The crash was reported just after 7:30 a.m. prompting authorities to issue a SigAlert for the area, according to the CHP incident log. Traffic was backed up for miles on both sides of the freeway.
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Several paramedic units were requested for injured motorists, however it appeared most of the injuries were minor.
All but one lane of the freeway, including the carpool lane, were blocked for about two hours as CHP officers and rescue personnel tended to the crash. There were reports drivers were using the right-hand emergency lane to get around the large collision.
Traffic was backed up to Fairplex in Pomona as well as to the Ontario area on the westbound lanes of the freeway.



