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COSTA MESA, Orange County, Calif., Nov. 7, 2026 — Two vehicles collided on Friday morning, November 6, on northbound Interstate 405 at the connector to northbound State Route 55 in Costa Mesa, according to the California Highway Patrol. The crash caused injuries serious enough that the agency's log listed both vehicles with major front-end damage.
The collision happened on the transition road connecting northbound I-405 to northbound SR-55. A white Mercedes-Benz G-Class and a black Toyota RAV4 were both involved, and all lanes in the area were briefly shut down before crews worked to move the vehicles to the shoulder.
The CHP log noted a report of a silver 2023 Toyota RAV4 involved in the crash, relayed by a vehicle call center, whose occupant reportedly sounded confused at the time of the call. It is not clear from available information whether that report refers to a driver, a passenger, or someone else connected to the vehicle. Tow trucks were requested to the scene, and the roadway reopened after crews cleared the vehicles.
No fatalities were reported in connection with the crash. The extent of the injuries has not been detailed beyond the "major" damage noted for both vehicles, and the CHP has not released further information on the people involved or a cause.
We hope everyone who was hurt makes a full and speedy recovery.
Local Crash Information for Costa Mesa, CA
The crash was reported on Interstate 405 in Costa Mesa. For more crash news from the area, see our Orange County accident reports.
Frequently Asked Questions
Where do most traffic accidents happen?
Many serious crashes occur at highway interchanges and lane transitions, where vehicles merge, slow, or change speed quickly, increasing the chance of a collision.
What injuries are most common in car accidents?
Common injuries include whiplash, head and neck injuries, broken bones, and cuts or bruises from broken glass or impact with the vehicle's interior.
What are the most common causes of car accidents?
Distracted driving, following too closely, speeding, and sudden lane changes are frequently cited factors in highway collisions, though the specific cause of any crash is determined by investigators.
