Traffic Chaos on SR-60 After Collision

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

📍 Diamond Bar, CA

📅 Published: July 27, 2025 at 11:33 AM

🔄 Updated: July 27, 2025 at 05:01 PM

Map showing the location of the accident in Diamond Bar, CA
Diamond Bar, July 27, 2025 -

A traffic collision involving two vehicles occurred today on the eastbound lanes of State Route 60 (SR-60) near the Grand Avenue off-ramp in Diamond Bar, CA. The incident involved a black Chevrolet Silverado and a civilian motorcycle, leading to significant traffic disruptions during the morning commute.

Emergency units responded promptly to the scene, implementing traffic management measures to slow down vehicles and secure the area. As a result of the collision, multiple lanes were closed, causing delays and congestion for drivers traveling eastbound on SR-60.

At one point, all eastbound lanes were blocked, leading to backups that extended into the morning rush hour. Emergency responders worked diligently to control traffic flow and clear the scene. By late morning, some lanes were reopened, allowing for improved traffic conditions.

Motorists are advised to remain cautious and expect potential residual delays as cleanup efforts continued. The California Highway Patrol is managing the situation to restore normal traffic flow as quickly as possible.

For those traveling through Diamond Bar, CA, it is recommended to seek alternative routes if possible to avoid lingering congestion from this traffic incident.

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