Major Traffic Disruption Following Collision in Diamond Bar

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

📍 Diamond Bar, CA

📅 Published: September 29, 2025 at 10:32 PM

Map showing the location of the accident in Diamond Bar, CA
Diamond Bar, September 29, 2025 -

A traffic collision on State Route 57 North and State Route 60 East in Diamond Bar, CA, has resulted in significant traffic disruptions today. The incident occurred around 9:57 PM and involved four vehicles: a grey Nissan Rogue, a white Scion, a grey van, and a small SUV.

Emergency services quickly arrived on the scene to manage the situation and control traffic flow. As a result of the collision, several lanes were blocked, leading to delays and congestion for drivers in the area. Road management teams are actively working to clear the scene and restore normal traffic conditions.

A tow truck has been requested to assist with the removal of the vehicles involved in the traffic incident. Motorists are advised to seek alternate routes to avoid the backup caused by this incident. The ongoing lane closures may lead to extended delays, particularly during the evening hours.

Authorities are urging caution for all drivers navigating through the affected area. Updates will be provided as emergency services continue their efforts to clear the scene and restore traffic flow on State Route 57 North and State Route 60 East in Diamond Bar, CA.

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