Major Multi-Vehicle Collision Disrupts I-5 Traffic

Traffic Collision on Interstate 5 in Castaic Causes Major Delays Today

📍 Castaic, CA

📅 Published: September 29, 2025 at 09:11 AM

🔄 Updated: September 29, 2025 at 10:30 AM

Map showing the location of the accident in Castaic, CA
Castaic, September 29, 2025 -

A significant traffic collision occurred today on Interstate 5 South (I-5) at South Parker Road in Castaic, CA, involving eight vehicles, including two red semi trucks, a gray SUV, a beige Honda SUV, and a gray sedan. The incident took place during the morning commute, resulting in full lane closures and substantial traffic delays as emergency services responded to the scene.

Traffic was rerouted, leading to backups and congestion in the area. Emergency responders arrived promptly to manage the situation and coordinate towing operations for the vehicles involved. All lanes on the right side of the roadway were blocked, causing a disruption in the flow of traffic.

By mid-morning, a tow truck was requested to assist with the gray SUV, which was located in a construction zone, complicating access for emergency services. Additionally, it was reported that approximately 40 feet of concrete barrier had been displaced, although there was no immediate hazard to other vehicles.

Motorists are advised to seek alternative routes to avoid delays and congestion in the area as cleanup efforts continue. The California Highway Patrol is on-site to ensure safety and facilitate the reopening of the roadway.

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