Major Traffic Disruption on I-280 After Collision

Traffic Collision on Interstate 280 South in San Francisco Causes Delays Today

📍 San Francisco, CA

📅 Published: June 11, 2025 at 08:38 PM

🔄 Updated: June 11, 2025 at 10:00 PM

Map showing the location of the accident in San Francisco, CA
San Francisco, June 11, 2025 -

A traffic collision on Interstate 280 South at the Mariposa Street on-ramp in San Francisco, CA, caused significant traffic disruptions today. The incident, involving a single vehicle—a 2023 white Subaru Crosstrek—was reported around 8:04 PM. The vehicle overturned and ended up in the bushes below the freeway, prompting a rapid emergency response.

Emergency services quickly arrived on the scene to manage traffic and ensure safety. Initially, multiple lanes were blocked, leading to delays for motorists. By 8:30 PM, a signal alert was issued, warning drivers of the lane closures and potential congestion. Traffic was notably impacted as vehicles were diverted around the area.

Fire crews worked diligently to clear the scene, cutting through shrubbery to assist with the vehicle's recovery. By approximately 9:17 PM, all lanes were reported to be open again, allowing traffic to resume its normal flow. The efficient response from emergency services helped to minimize the disruption caused by the traffic incident.

Motorists traveling on Interstate 280 South should remain cautious and expect potential delays in the area, particularly during peak travel times. The California Highway Patrol continues to monitor traffic conditions to ensure safe passage for all drivers.

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