Major Traffic Disruption in San Dimas Collision

Traffic Collision on State Route 57 South to Interstate 10 West in San Dimas Causes Delays Today

📍 San Dimas, CA

📅 Published: September 12, 2025 at 08:07 PM

Map showing the location of the accident in San Dimas, CA
San Dimas, September 12, 2025 -

A traffic collision involving two vehicles occurred today on the transition from State Route 57 South to Interstate 10 West in San Dimas, CA. The incident was reported around 7:13 PM and involved a silver Honda and a dark gray Jeep SUV. The collision resulted in both vehicles blocking the middle lanes, causing significant traffic disruptions.

Emergency responders arrived promptly to manage the scene and control traffic flow. Towing services were requested for at least one of the vehicles, indicating it may not have been drivable. For approximately 20 minutes, all lanes were held, leading to delays and congestion for motorists in the area.

As emergency teams worked to clear the roadway, traffic was significantly impacted. By 7:47 PM, the lanes were reopened, although only the slow lane remained in use. This partial reopening allowed some relief for drivers, but residual traffic backup was still expected as vehicles began to navigate the area.

Motorists traveling through San Dimas, CA, should remain cautious and expect possible delays as traffic resumes normal flow following this traffic incident. Authorities recommend using alternate routes if possible to avoid lingering congestion.

Were you or someone you know involved in this accident?

If you would like the full incident log, we can send it to you directly.

Request Full Incident Log

Disclaimer

The content on this website is auto-generated and based on publicly available information. While we strive to provide accurate and timely updates, we cannot guarantee the accuracy, completeness, or reliability of the information presented. This content is for informational purposes only and should not be used as the basis for decision-making. We encourage you to independently verify any facts or details. For the most accurate and up-to-date information, please contact the California Highway Patrol (CHP) directly. The website and its owners are not responsible for any errors, omissions, or actions taken based on the information provided.