Major Traffic Disruption on State Route 57

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

📍 San Dimas, CA

📅 Published: May 4, 2025 at 08:05 AM

🔄 Updated: May 4, 2025 at 08:38 AM

Map showing the location of the accident in San Dimas, CA
San Dimas, May 4, 2025 -

A traffic collision on State Route 57 South in San Dimas, CA, caused significant traffic disruptions during the morning commute today. The incident involved two vehicles: a black Honda or Toyota and a black sedan that sustained front-end damage. The black sedan experienced mechanical issues, specifically a loss of braking, which contributed to the collision.

Emergency traffic management units responded quickly to the scene, working to control the situation and clear the roadway. As a result of the traffic incident, drivers experienced delays and backups at the intersection of State Route 57 South and Via Verde. The congestion affected the flow of traffic, causing frustration among morning commuters.

The black sedan was left facing west in the general purpose lane, while the other vehicle was positioned in a way that further impacted traffic flow. A tow truck was called to assist with the removal of the damaged vehicles from the roadway. By mid-morning, emergency responders had cleared the scene, allowing traffic to resume its normal flow.

Motorists are advised to remain vigilant and aware of their surroundings while driving in the area, especially during peak travel times. This incident highlights the importance of vehicle maintenance and safe driving practices to help prevent similar traffic collisions in the future.

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