Major Collision Causes Traffic Chaos on Highway 101

Traffic Collision on US Highway 101 in San Francisco Causes Delays Today

📍 San Francisco, CA

📅 Published: October 4, 2025 at 08:50 AM

🔄 Updated: October 4, 2025 at 10:02 AM

Map showing the location of the accident in San Francisco, CA
San Francisco, October 4, 2025 -

A traffic collision occurred today on US Highway 101 North at the Merchant Road on-ramp in San Francisco, CA, involving four vehicles. The incident included a large navy blue SUV, a blue SUV towing another vehicle, a black Chevrolet SUV, and a white Volkswagen.

The collision led to significant lane blockages, particularly affecting the northbound lane on US Highway 101, resulting in traffic congestion and delays for morning commuters. Emergency response teams were promptly dispatched to manage the scene and control traffic flow. A tow truck was called to assist with the removal of the damaged vehicles, some of which were taken to an east lot.

As a result of the traffic incident, drivers experienced backups and slow-moving traffic in the area, especially near the bridge that was blocked on the northbound side of US Highway 101. Authorities worked diligently to clear the scene and restore normal traffic conditions. Motorists are advised to seek alternate routes to avoid delays as cleanup efforts continue.

This traffic collision serves as a reminder for drivers to exercise caution while traveling, particularly during peak hours. Staying informed about road conditions and traffic updates can help ensure a safer journey.

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