Traffic Collision Causes Major Delays in San Dimas

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

📍 San Dimas, CA

📅 Published: September 5, 2025 at 05:03 AM

🔄 Updated: September 5, 2025 at 07:00 AM

Map showing the location of the accident in San Dimas, CA
San Dimas, September 5, 2025 -

A traffic collision occurred today on State Route 57 South at State Route 71 South in San Dimas, CA, leading to significant traffic disruptions during the early morning hours. The incident was reported around 3:24 AM when a light pole fell into the slow lane, prompting immediate lane restrictions and a temporary closure of the transit road.

Emergency response units quickly arrived at the scene to manage traffic and ensure safety. One vehicle was confirmed to be involved in the incident, which was located on the right-hand shoulder. A tow truck was called to assist with the removal of the vehicle, while crews worked to secure the area and address the downed pole.

Traffic was held on the transit road for approximately ten minutes to facilitate the emergency response efforts. As a result, drivers experienced delays and congestion in the area, particularly affecting the morning commute.

Authorities advised motorists to exercise caution while navigating through the affected zone and to anticipate potential backups as cleanup operations continued. The situation was monitored closely, and updates were provided as necessary to keep the public informed about traffic conditions.

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