Accident High Severity Resolved

CHP : Traffic Hazard on I-680 Southbound exiting at Sycamore Valley Rd (Danville). Off Ramp affected. Expect delays.

A high-severity accident was reported on I-680 S near Contra Costa on May 18, 2026 at 11:16 PM.

Road

I-680 S

Area

Contra Costa

Address

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Started

May 18, 4:16 PM

Last Updated

1 week, 3 days ago

May 18, 4:30 PM

Resolved

May 18, 10:45 PM

Coordinates

37.8149, -121.9935

Update History

1 observations

CHP : Traffic Hazard on I-680 Southbound exiting at Sycamore Valley Rd (Danville). Off Ramp affected. Expect delays. May 18, 4:30 PM

Source: 511_sfbay · ID 511.org/1496279 First seen May 18, 2026 4:30 PM