Multi-Vehicle Collision Disrupts Traffic on SR-57

Traffic Collision on State Route 57 in San Dimas Causes Delays Today

📍 San Dimas, CA

📅 Published: June 9, 2025 at 11:09 PM

Map showing the location of the accident in San Dimas, CA
San Dimas, June 9, 2025 -

A traffic collision occurred today on State Route 57 North near the Covina Boulevard off-ramp in San Dimas, CA, involving three vehicles, including a white Tesla. The incident was reported around 10:45 PM, leading to debris in the lanes and significant traffic impact.

Emergency services responded swiftly, deploying multiple units to the scene to manage traffic and ensure safety. The vehicles involved remained at the location, contributing to lane obstructions that required immediate roadway clearance efforts. As a result, drivers experienced delays and congestion along State Route 57, particularly during the evening commute.

The presence of emergency responders and ongoing clearance operations may continue to affect traffic flow in the area. Motorists are advised to seek alternative routes to avoid potential backups and delays while crews work to clear the scene.

Travelers are encouraged to stay informed about traffic conditions and exercise caution while navigating through the affected area. The situation is developing, and updates will be provided as more information becomes available.

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