Major Traffic Disruption on State Route 55

Traffic Collision on State Route 55 South in Tustin Causes Significant Delays Today

📍 Tustin, CA

📅 Published: August 12, 2025 at 02:04 PM

🔄 Updated: August 12, 2025 at 03:30 PM

Map showing the location of the accident in Tustin, CA
Tustin, August 12, 2025 -

A traffic collision on State Route 55 South in Tustin, CA, has led to significant traffic disruptions today. The incident, which occurred around 1:18 PM, involved two vehicles: a dark gray or blue Chevrolet sedan and a white Chevrolet pickup truck. Both vehicles remained at the scene, with indications that at least one may no longer be drivable.

In response to the collision, traffic management measures have been implemented, including lane closures affecting the dedicated High-Occupancy Vehicle (HOV) lane and adjustments to regular lanes. Traffic signals in the area are actively alerting drivers to the situation. Emergency units have been dispatched to manage traffic flow and secure the scene.

Reports indicate that chemicals were spilled across all lanes, prompting a response from hazardous materials teams. A signal alert has been issued for one hour, directing all vehicles off at the 4th Street off-ramp. As of 2:51 PM, the HOV lane remains closed, while other lanes are open, although congestion and delays are expected as traffic begins to clear.

Motorists are advised to seek alternate routes to avoid potential backups and delays in the area. The situation is ongoing, and updates will be provided as more information becomes available.

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