Accident
Moderate Severity
Resolved
CHP : Traffic Collision on I-280 Southbound south of Avalon Dr (South San Francisco). Lane affected. Expect delays.
A injury accident was reported on I-280 S near San Mateo on May 23, 2026 at 11:53 PM.
Last Updated
1 day, 4 hours ago
May 23, 5:00 PM
Resolved
May 23, 11:15 PM
Coordinates
37.6369, -122.4397
Update History
3 observations
CHP : Traffic Collision on I-280 Southbound south of Avalon Dr (South San Francisco). Lane affected. Expect delays.
May 23, 5:00 PM
CHP : Traffic Collision on I-280 Southbound south of Avalon Dr (South San Francisco). Lane affected. Expect delays.
May 23, 4:45 PM
CHP : Traffic Collision on I-280 Southbound south of Avalon Dr (South San Francisco). Lane affected. Expect delays.
May 23, 4:30 PM
Source: 511_sfbay · ID 511.org/1498736
First seen May 23, 2026 4:30 PM