Major Traffic Jam After Collision on SR-57

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

📍 Diamond Bar, CA

📅 Published: September 22, 2025 at 01:06 PM

🔄 Updated: September 22, 2025 at 01:38 PM

Map showing the location of the accident in Diamond Bar, CA
Diamond Bar, September 22, 2025 -

A traffic collision on State Route 57 North at State Route 60 East in Diamond Bar, CA, has caused significant traffic disruptions today. The incident occurred around 12:38 PM and involved three vehicles: a black Nissan Altima and two small sedans, a red Chrysler and a red Kia. All three vehicles are inoperable and remain at the scene, blocking both the high-occupancy vehicle (HOV) lane and the main travel lane.

Emergency response teams, including traffic management units, are on-site to manage the situation and facilitate the clearing of the roadway. As a result of the blockage, motorists are experiencing delays and congestion in the area, particularly during the busy afternoon commute. Drivers are advised to seek alternate routes to avoid the backup, as the traffic incident is expected to impact travel times for the foreseeable future.

Towing services have been called to the scene to assist in removing the vehicles and restoring normal traffic flow. The presence of these inoperable vehicles has raised concerns about traffic conditions, prompting authorities to take swift action to secure the area. Motorists are encouraged to remain cautious and patient as the situation is resolved.

For updates on traffic conditions and further developments regarding this traffic collision, stay tuned to local news sources.

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