Major Collision Disrupts Morning Commute in Costa Mesa

Traffic Collision on State Route 55 North in Costa Mesa Causes Major Delays Today

📍 Costa Mesa, CA

📅 Published: September 20, 2025 at 06:32 AM

🔄 Updated: September 20, 2025 at 07:07 AM

Map showing the location of the accident in Costa Mesa, CA
Costa Mesa, September 20, 2025 -

A significant traffic collision occurred today on State Route 55 North at the Interstate 405 interchange in Costa Mesa, CA, causing major disruptions during the morning commute. The incident involved five vehicles, including an overturned truck in the high-occupancy vehicle lane, a solo vehicle involved in the collision, a second vehicle that stopped to assist, an unknown color SUV that also overturned, and a Ford pickup truck.

Traffic was severely impacted, with lane blockages affecting the high-occupancy vehicle lane and other lanes, leading to significant delays and congestion in the area. Emergency response units were dispatched to manage the situation, implementing traffic break measures to alleviate the backup. Traffic management efforts included deploying flares and stopping all lanes to ensure safety while clearing the roadway.

By 6:35 AM, the roadway was reported to be cleared, but motorists should expect residual delays as traffic resumes to normal flow. Authorities advise drivers to remain cautious and consider alternate routes to avoid potential congestion in the aftermath of the traffic incident.

This collision underscores the importance of safe driving practices and the need for quick response measures to minimize traffic disruptions on California highways.

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