Accident High Severity Resolved

CHP : Traffic Hazard on I-680 Southbound entering at Geary Rd (Walnut Creek). On Ramp affected. Expect delays.

A high-severity accident was reported on I-680 S near Contra Costa on October 4, 2026 at 11:27 PM.

Road

I-680 S

Area

Contra Costa

Address

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Started

Oct 4, 4:27 PM

Last Updated

3 weeks, 2 days ago

Oct 4, 4:30 PM

Resolved

Oct 4, 10:45 PM

Coordinates

37.9233, -122.0613

Update History

1 observations

CHP : Traffic Hazard on I-680 Southbound entering at Geary Rd (Walnut Creek). On Ramp affected. Expect delays. Oct 4, 4:30 PM

Source: 511_sfbay · ID 511.org/1558942 First seen Oct 4, 2026 4:30 PM