Major Traffic Disruption on Interstate 280 South

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

📍 San Francisco, CA

📅 Published: June 11, 2025 at 11:34 PM

🔄 Updated: June 12, 2025 at 01:01 AM

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

A traffic collision on Interstate 280 South in San Francisco, CA, caused significant disruptions today. The incident involved three vehicles: a white pickup truck, a black SUV, and an unknown color Honda Civic. The collision occurred around 11:20 PM, resulting in the blockage of lanes 2 and 3, which led to considerable traffic congestion in the area.

Emergency response teams promptly arrived to manage the situation and secure the scene. Multiple units were dispatched to assist with traffic control, ensuring the safety of all motorists. A tow truck was called to remove the vehicles involved in the traffic collision, contributing to the lane closures.

Motorists traveling near the Mariposa Street on-ramp to Interstate 280 South experienced delays as the traffic incident unfolded. Authorities issued a SigAlert, warning of the blocked lanes and advising drivers to expect backups and congestion. The on-ramp was also closed to facilitate emergency operations.

As emergency personnel worked to clear the scene, they focused on restoring normal traffic flow as quickly as possible. Motorists are advised to seek alternate routes and remain cautious while navigating the area until the situation is fully resolved.

For those traveling in San Francisco, CA, please stay updated on traffic conditions and plan accordingly to avoid delays caused by this traffic collision.

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