Major Traffic Delays After I-405 Collision

Traffic Collision on Interstate 405 South in Costa Mesa Causes Delays Today

📍 Costa Mesa, CA

📅 Published: September 26, 2025 at 09:03 AM

Map showing the location of the accident in Costa Mesa, CA
Costa Mesa, September 26, 2025 -

A traffic collision on Interstate 405 South in Costa Mesa, CA, caused significant disruptions during the morning commute today. The incident, which involved three vehicles—a black Lexus, a red Honda, and a black SUV—occurred around 8:04 AM.

As a result of the collision, all lanes were temporarily stopped, leading to considerable traffic delays. Emergency services quickly arrived at the scene to manage the situation and direct vehicles to the right to facilitate a smoother flow of traffic. By 8:14 AM, all lanes were halted as responders worked to clear the roadway.

By 8:18 AM, the roadway was cleared, allowing vehicles to resume their journeys. However, motorists experienced backups and congestion in the area as traffic gradually returned to normal.

Drivers traveling through Costa Mesa are advised to remain cautious and stay updated on traffic conditions, especially during peak hours. This traffic collision highlights the importance of safe driving practices and the need for vigilance on the roads.

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