Multi-Vehicle Collision Causes Major Traffic Delays

Traffic Collision on State Route 57 South in Diamond Bar Causes Delays Today

📍 Diamond Bar, CA

📅 Published: July 5, 2025 at 06:35 AM

Map showing the location of the accident in Diamond Bar, CA
Diamond Bar, July 5, 2025 -

A traffic collision involving five vehicles occurred today on State Route 57 South near South Diamond Bar Boulevard in Diamond Bar, CA, at approximately 6:03 AM. The incident included two white sedans, one black sedan, one white Subaru SUV, and one black Honda. Reports indicate that some vehicles were positioned sideways, leading to the blockage of the High-Occupancy Vehicle (HOV) lane.

As a result of the traffic incident, significant delays and congestion were reported in the area during the morning commute. Emergency services were dispatched to the scene to manage traffic flow and control the situation. Their efforts focused on clearing the roadway and minimizing disruption for other drivers.

Motorists traveling through the area should expect continued backups as the scene is addressed. Authorities recommend seeking alternate routes to avoid delays. The traffic collision has created a challenging situation for commuters, and updates will be provided as the situation develops.

For those navigating through Diamond Bar, CA, it is crucial to remain cautious and patient as emergency responders work to resolve the traffic incident.

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