Major Collision Blocks Lanes on State Route 60

Traffic Collision on State Route 60 in Diamond Bar Causes Delays Today

📍 Diamond Bar, CA

📅 Published: July 22, 2025 at 12:34 PM

Map showing the location of the accident in Diamond Bar, CA
Diamond Bar, July 22, 2025 -

A traffic collision occurred today on State Route 60 West at North Diamond Bar Boulevard in Diamond Bar, CA, involving three vehicles: a white Enterprise truck, a white semi truck, and a box truck. The incident was reported at approximately 11:34 AM when the Enterprise truck collided with the semi truck, blocking lanes three and four.

Emergency services responded promptly to the scene, deploying multiple units to manage traffic and ensure safety. By 11:40 AM, the blocked lanes were causing significant traffic congestion, impacting the flow of vehicles during the busy morning commute.

As the situation developed, a tow truck was initially requested for the box truck, but this request was later canceled. The presence of the box truck in the slow lane continued to contribute to delays for motorists.

Drivers in the area experienced backups and congestion as emergency responders worked diligently to clear the scene and restore normal traffic flow. Authorities advised motorists to seek alternate routes to avoid delays while cleanup efforts were underway.

This traffic incident serves as a reminder for drivers to exercise caution on the roads, especially during peak travel times.

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