Major Traffic Disruptions on US Highway 101

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

📍 San Francisco, CA

📅 Published: September 20, 2025 at 02:46 AM

🔄 Updated: September 20, 2025 at 03:38 AM

Map showing the location of the accident in San Francisco, CA
San Francisco, September 20, 2025 -

A traffic collision on US Highway 101 South near the Alemany Boulevard On-Ramp in San Francisco, CA, has caused significant traffic disruptions today. The incident, involving two vehicles—a blue Tesla Model Y and a red SUV—occurred at approximately 2:42 AM. Both vehicles were found on the right-hand shoulder, with the Tesla confirmed to be drivable.

As a result of the traffic incident, motorists are experiencing lane slowdowns and are advised to avoid lingering in the lanes due to unstable traffic conditions. The California Highway Patrol (CHP) units are on the scene, focusing on traffic management and securing the area to ensure safety for all drivers.

Traffic delays and backups are expected as emergency responders work to clear the scene. Drivers are encouraged to seek alternate routes to avoid congestion in the area. The CHP is actively monitoring the situation to restore normal traffic flow as quickly as possible.

For those traveling through this area during the morning commute, it is important to remain alert and follow any posted advisories to navigate safely around the traffic incident. Updates will be provided as the situation evolves.

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