Major Traffic Disruption on State Route 57

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

📍 Diamond Bar, CA

📅 Published: August 15, 2025 at 07:10 PM

Map showing the location of the accident in Diamond Bar, CA
Diamond Bar, August 15, 2025 -

A traffic collision on the southbound State Route 57 near Temple Avenue in Diamond Bar, CA, has resulted in significant traffic disruptions today. The incident occurred around 5:59 PM and involved two vehicles: a dark gray Tesla Model Y and a light blue Volkswagen. Both vehicles are currently not drivable, prompting emergency response teams to implement traffic control measures.

As a result of the collision, lane closures have been established on southbound State Route 57, leading to potential delays and congestion for drivers in the area. Emergency units are on-site to manage the situation and facilitate the clearing of the roadway.

Motorists are advised to seek alternate routes to avoid backups and delays caused by the ongoing traffic incident. The California Highway Patrol is actively working to restore normal traffic flow and ensure safety for all road users.

Drivers should remain vigilant and exercise caution while navigating through the affected area. Updates regarding the traffic situation will be provided as the emergency response continues to address the incident.

For those traveling through Diamond Bar, CA, staying informed about traffic conditions and planning ahead is recommended to minimize travel disruptions.

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