Accident High Severity Resolved

CHP : Traffic Hazard on US-101 Southbound at Mendocino Ave (Santa Rosa). On Ramp blocked. Expect delays.

A high-severity accident was reported on US-101 S near Sonoma on September 19, 2026 at 11:46 PM.

Road

US-101 S

Area

Sonoma

Address

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Started

Sep 19, 4:46 PM

Last Updated

1 month, 1 week ago

Sep 19, 5:00 PM

Resolved

Sep 19, 11:00 PM

Coordinates

38.4797, -122.7337

Update History

1 observations

CHP : Traffic Hazard on US-101 Southbound at Mendocino Ave (Santa Rosa). On Ramp blocked. Expect delays. Sep 19, 5:00 PM

Source: 511_sfbay · ID 511.org/1551970 First seen Sep 19, 2026 5:00 PM