Accident Resolved

CHP : Residual delays on I-280 Southbound at Mariposa St (San Francisco). All lanes open. Expect delays.

A accident was reported on I-280 S near San Francisco on June 12, 2026 at 2:26 PM.

Road

I-280 S

Area

San Francisco

Address

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Started

Jun 12, 7:26 AM

Last Updated

4 months, 2 weeks ago

Jun 12, 7:30 AM

Resolved

Jun 12, 1:30 PM

Coordinates

37.7641, -122.3930

Update History

6 observations

CHP : Residual delays on I-280 Southbound at Mariposa St (San Francisco). All lanes open. Expect delays. Jun 12, 7:30 AM

CHP : Severe traffic alert and Traffic Collision with Injuries on I-280 Southbound between Mariposa St (San Francisco) and I-280 N-king ST-6TH ST Ramp Merge (San Francisco). All lanes blocked. Avoid the area. Jun 12, 7:00 AM

CHP : Severe traffic alert and Traffic Collision with Injuries on I-280 Southbound between Mariposa St (San Francisco) and I-280 N-king ST-6TH ST Ramp Merge (San Francisco). All lanes blocked. Avoid the area. Jun 12, 6:30 AM

CHP : Severe traffic alert and Traffic Collision with Injuries on I-280 Southbound between Mariposa St (San Francisco) and I-280 N-king ST-6TH ST Ramp Merge (San Francisco). All lanes blocked. Avoid the area. Jun 12, 6:15 AM

CHP : Severe traffic alert and Traffic Collision with Injuries on I-280 Southbound between Mariposa St (San Francisco) and I-280 N-king ST-6TH ST Ramp Merge (San Francisco). All lanes blocked. Avoid the area. Jun 12, 5:45 AM

CHP : Severe traffic alert and Traffic Collision with Injuries on I-280 Southbound between Mariposa St (San Francisco) and I-280 N-king ST-6TH ST Ramp Merge (San Francisco). All lanes blocked. Avoid the area. Jun 12, 5:15 AM

Source: 511_sfbay · ID 511.org/1507288 First seen Jun 12, 2026 5:15 AM