Costa Mesa Motorcycle Accident I-405 Freeway, SR-55 Freeway (4/2)

Motorcycle Collision Blocks Lanes on I-405 North near SR-55
COSTA MESA, Calif. (April 2, 2025) — A motorcycle accident occurred Wednesday morning on the northbound I-405 Freeway, just south of SR-55 in Costa Mesa.
The two-vehicle collision happened in the middle and slow lanes at approximately 6:08 AM on April 2nd, according to the California Highway Patrol.
It’s unknown at this time what led up to the crash involving a motorcycle and a black Honda Civic.
Emergency responders arrived and located one rider down in traffic lanes and the car pulled over on the right shoulder. It’s unknown at this time if the rider was taken to a hospital or treated on the scene.
Investigators are working to determine fault for the motorcycle accident in Costa Mesa.
Finally, the incident caused significant traffic disruptions for morning commuters until the freeway was cleared around 6:45 AM.
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Source: CHP Incident: 0055