Major Multi-Vehicle Collision Disrupts I-5 Traffic

Traffic Collision on Interstate 5 in Castaic Causes Delays Today

📍 Castaic, CA

📅 Published: July 3, 2025 at 10:03 PM

🔄 Updated: July 3, 2025 at 11:31 PM

Map showing the location of the accident in Castaic, CA
Castaic, July 3, 2025 -

A major traffic collision occurred today on Interstate 5 North in Castaic, CA, involving seven vehicles, including a flipped semi-truck. The incident has resulted in significant lane closures, specifically blocking lanes one and two, which has led to heavy congestion and delays for drivers in the area.

The collision was reported around 9:40 PM, with confirmed vehicles at the scene including a black Chevrolet Malibu, a red pickup truck, a red SUV, a red Ford F150, a silver Subaru, and one additional unknown vehicle. Several of these vehicles are not drivable and will require towing.

Emergency response teams, including multiple units from the California Highway Patrol, arrived promptly to manage the situation and facilitate traffic flow. Towing services have been requested to assist with the removal of the damaged vehicles.

As the evening commute continues, motorists are advised to expect significant backups and plan alternative routes if possible. Traffic is heavily impacted, particularly in the northbound lanes just south of Vista Del Lago, where congestion is expected to persist until the scene is cleared.

Drivers are urged to exercise caution and remain alert while navigating through this area. Updates will be provided as the situation develops and the roadway is cleared.

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