Major Traffic Jam on I-5 South Today

Traffic Collision on Interstate 5 in Castaic Causes Major Delays Today

📍 Castaic, CA

📅 Published: August 14, 2025 at 05:32 AM

🔄 Updated: August 14, 2025 at 06:34 AM

Map showing the location of the accident in Castaic, CA
Castaic, August 14, 2025 -

A significant traffic incident occurred today on Interstate 5 South (I-5 S) near Templin Highway Off-Ramp in Castaic, CA, leading to major traffic disruptions during the morning commute. The collision involved one vehicle, a semi tanker, which became disabled and blocked multiple lanes of traffic, specifically lanes three and four. As a result, only lane one remained open, causing considerable delays and congestion in the area.

Emergency response teams quickly implemented hard closures and traffic diversion measures to manage the situation effectively. Debris, including sand from the incident, further complicated roadway conditions, necessitating the arrival of a tow truck to assist in clearing the semi tanker from the scene. Traffic management teams coordinated with the California Department of Transportation to establish a hard closure for the affected lanes and issued a signal alert for an estimated two-hour delay.

As the incident unfolded, traffic was temporarily halted south of Vista Del Lago to ensure safe passage for emergency personnel. Motorists are advised to seek alternate routes to avoid the backup and delays caused by this traffic collision. The situation is being monitored closely, and updates will be provided as the roadway is cleared and normal traffic flow is restored.

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