Traffic Collision Disrupts Evening Commute in Diamond Bar

Traffic Collision on State Route 60 in Diamond Bar Causes Lane Closures Today

📍 Diamond Bar, CA

📅 Published: July 1, 2025 at 11:08 PM

Map showing the location of the accident in Diamond Bar, CA
Diamond Bar, July 1, 2025 -

A traffic collision occurred today on State Route 60 West at State Route 57 South in Diamond Bar, CA, involving two vehicles: a blue Honda and an Amazon semi truck. The incident took place around 10:32 PM, leading to significant traffic disruptions. The collision resulted in the blockage of the middle lane and three left lanes, causing delays and congestion for drivers in the area.

Emergency response units arrived quickly to manage the scene and direct traffic. Towing services were requested to remove the vehicles, as at least one was rendered not moveable. The ongoing lane closures have created a backup, impacting the normal flow of traffic during the evening commute.

Motorists are advised to seek alternative routes to avoid delays while crews work to clear the scene. Updates will be provided as the situation develops.

This traffic incident underscores the importance of safe driving practices, especially during peak travel times. Drivers are reminded to remain vigilant and adhere to traffic regulations to ensure safety on the roads.

For those traveling through Diamond Bar, CA, on State Route 60 and State Route 57, patience is encouraged as emergency crews work to restore normal traffic conditions.

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