Major Collision Closes Lane on State Route 57

Traffic Collision on State Route 57 South in Walnut Causes Lane Closure Today

📍 Walnut, CA

📅 Published: July 24, 2025 at 03:08 PM

🔄 Updated: July 24, 2025 at 05:00 PM

Map showing the location of the accident in Walnut, CA
Walnut, July 24, 2025 -

A significant traffic collision occurred today on State Route 57 South near the Brea Canyon Road off-ramp in Walnut, CA, resulting in a lane closure and traffic disruptions. The incident involved three vehicles: two semi-trucks and a dirt hauling big rig. One of the semi-trucks impacted the guardrail, causing damage and debris to block the roadway.

Emergency response teams from the California Highway Patrol quickly arrived at the scene to manage traffic control and clear the area. The collision was reported around 2:13 PM, and by 2:32 PM, lane #4 was officially closed to facilitate the removal of debris and ensure safety for all motorists.

Motorists traveling through this area should anticipate delays and potential backups as crews work to clear the scene and repair the damaged guardrail. A tow truck was requested to assist with the removal of the vehicles involved in the incident. Drivers are encouraged to seek alternate routes if possible to avoid congestion in the area.

This traffic incident underscores the importance of exercising caution while driving, particularly in areas where heavy vehicles are present. Updates on the situation will be provided as they become available.

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