Accident
High Severity
Stale
CHP : Severe traffic alert and Traffic Collision on US-101 Northbound south of Dore Ave (San Mateo). Left and center lanes blocked. Expect delays.
A high-severity accident was reported on US-101 N near San Mateo on October 31, 2026 at 7:34 PM.
Last Updated
1 hour, 53 minutes ago
Oct 31, 1:15 PM
Coordinates
37.5779, -122.3214
Update History
2 observations
CHP : Severe traffic alert and Traffic Collision on US-101 Northbound south of Dore Ave (San Mateo). Left and center lanes blocked. Expect delays.
Oct 31, 1:00 PM
CHP : Traffic Collision on US-101 Northbound south of Peninsula Ave (San Mateo). Left and center lanes blocked. Expect delays.
Oct 31, 12:45 PM
Source: 511_sfbay · ID 511.org/1571253
First seen Oct 31, 2026 12:45 PM