Accident
High Severity
Resolved
CHP : Traffic Collision on US-101 Southbound north of E Poplar Ave (San Mateo). Off Ramp affected. Expect delays.
A high-severity accident was reported on US-101 S near San Mateo on May 9, 2026 at 12:12 AM.
Last Updated
5 months, 2 weeks ago
May 8, 5:15 PM
Coordinates
37.5812, -122.3254
Update History
3 observations
CHP : Traffic Collision on US-101 Southbound north of E Poplar Ave (San Mateo). Off Ramp affected. Expect delays.
May 8, 5:15 PM
CHP : Traffic Collision on US-101 Southbound north of E Poplar Ave (San Mateo). Center lanes affected. Expect delays.
May 8, 5:00 PM
CHP : Traffic Collision on US-101 Southbound north of E Poplar Ave (San Mateo). Center lanes affected. Expect delays.
May 8, 4:45 PM
Source: 511_sfbay · ID 511.org/1492006
First seen May 8, 2026 4:45 PM