Accident
High Severity
Resolved
CHP : Traffic Collision on US-101 Northbound south of E 3RD Ave (San Mateo). Off Ramp affected. Expect delays.
A high-severity accident was reported on US-101 N near San Mateo on June 18, 2026 at 9:55 AM.
Last Updated
4 months, 1 week ago
Jun 18, 3:45 AM
Coordinates
37.5680, -122.3107
Update History
3 observations
CHP : Traffic Collision on US-101 Northbound south of E 3RD Ave (San Mateo). Off Ramp affected. Expect delays.
Jun 18, 3:00 AM
CHP : Traffic Collision on US-101 Northbound south of E 3RD Ave (San Mateo). Off Ramp affected. Expect delays.
Jun 18, 1:15 AM
CHP : Traffic Collision on US-101 Northbound south of E 3RD Ave (San Mateo). Off Ramp affected. Expect delays.
Jun 18, 12:15 AM
Source: 511_sfbay · ID 511.org/1509784
First seen Jun 18, 2026 12:15 AM