Accident High Severity Resolved

CHP : Traffic Hazard on US-101 Southbound entering at W Sierra Ave (Cotati). On Ramp blocked. Expect delays.

A high-severity accident was reported on US-101 S near Sonoma on October 19, 2026 at 12:13 PM.

Road

US-101 S

Area

Sonoma

Address

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Started

Oct 19, 5:13 AM

Last Updated

1 week, 1 day ago

Oct 19, 6:15 AM

Resolved

Oct 19, 12:15 PM

Coordinates

38.3185, -122.7144

Update History

2 observations

CHP : Traffic Hazard on US-101 Southbound entering at W Sierra Ave (Cotati). On Ramp blocked. Expect delays. Oct 19, 6:00 AM

CHP : Traffic Hazard on US-101 Southbound entering at W Sierra Ave (Cotati). On Ramp blocked. Expect delays. Oct 19, 5:30 AM

Source: 511_sfbay · ID 511.org/1565656 First seen Oct 19, 2026 5:30 AM