Major Collision Causes Delays on SR-60

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

📍 Diamond Bar, CA

📅 Published: August 23, 2025 at 07:30 PM

🔄 Updated: August 24, 2025 at 12:00 AM

Map showing the location of the accident in Diamond Bar, CA
Diamond Bar, August 23, 2025 -

A significant traffic collision occurred today on the westbound lanes of State Route 60 (SR-60) near the southbound connector to State Route 57 (SR-57) in Diamond Bar, CA. The incident involved five vehicles, including a blue Nissan Versa and two dark-colored sedans.

Emergency services, including the California Highway Patrol, responded quickly to manage the scene and ensure safety. The collision led to temporary lane closures, causing delays and congestion for motorists in the area. Crews worked diligently to clear debris from the roadway, which included sand barriers that had been displaced during the incident.

As a result of the traffic incident, a Sig Alert was issued, warning drivers of the ongoing situation and advising them to seek alternate routes. Traffic was significantly impacted as emergency responders worked to restore normal conditions.

By approximately 8:10 PM, all lanes were confirmed to be reopened, allowing traffic to resume its normal flow. Motorists are reminded to remain cautious and drive safely, particularly in areas where traffic incidents have occurred. The California Highway Patrol continues to monitor the situation to ensure a smooth recovery for all drivers on the affected routes.

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