Accident Moderate Severity Stale

CHP : Traffic Hazard on I-680 Southbound north of Sycamore Valley Rd (Danville). Left lane blocked. Expect delays.

A injury accident was reported on I-680 S near Contra Costa on October 28, 2026 at 11:19 PM.

Road

I-680 S

Area

Contra Costa

Address

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Started

Oct 28, 4:19 PM

Last Updated

5 hours, 41 minutes ago

Oct 28, 5:00 PM

Coordinates

37.8149, -121.9935

Update History

2 observations

CHP : Traffic Hazard on I-680 Southbound north of Sycamore Valley Rd (Danville). Left lane blocked. Expect delays. Oct 28, 5:00 PM

CHP : Traffic Hazard on I-680 Southbound north of Sycamore Valley Rd (Danville). Left lane blocked. Expect delays. Oct 28, 4:30 PM

Source: 511_sfbay · ID 511.org/1569902 First seen Oct 28, 2026 4:30 PM