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Irwindale, CA (March 22, 2026) – A big rig and an RV collided on Friday morning, March 20, on the westbound Foothill (210) Freeway in Irwindale, prompting a SigAlert during the morning commute.
The collision occurred around 4:41 a.m. near the Irwindale Avenue South off-ramp. Authorities reported that the RV crashed through a freeway guardrail and came to rest in an embankment.
Los Angeles County Fire Department paramedics treated one person at the scene for minor injuries. Two lanes of the westbound freeway and the off-ramp were closed for approximately two hours while crews cleared the wreckage.
No additional details have been released. Authorities continue to investigate the cause of the collision, and more information will be provided as it becomes available.
Our thoughts are with those affected.
How Large Vehicle Crashes Impact Freeway Traffic
Crashes involving big rigs and RVs can quickly block multiple lanes due to the size and weight of the vehicles. Removing large vehicles often requires specialized equipment, which can prolong lane closures.
Even minor injuries can occur because the impact force from large vehicles is significant. Traffic is often diverted to nearby exits, causing major delays for commuters. Early-morning crashes can pose additional challenges due to limited visibility and high-speed traffic during peak commute times.
