Accident Moderate Severity Resolved

CHP : Traffic Hazard on I-680 Northbound south of Stone Valley Rd (Alamo). Center lanes affected. Expect delays.

A injury accident was reported on I-680 N near Contra Costa on August 14, 2026 at 1:05 AM.

Road

I-680 N

Area

Contra Costa

Address

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Started

Aug 13, 6:05 PM

Last Updated

10 hours, 47 minutes ago

Aug 13, 8:00 PM

Resolved

Aug 14, 2:00 AM

Coordinates

37.8506, -122.0286

Update History

4 observations

CHP : Traffic Hazard on I-680 Northbound south of Stone Valley Rd (Alamo). Center lanes affected. Expect delays. Aug 13, 7:45 PM

CHP : Traffic Hazard on I-680 Northbound south of Stone Valley Rd (Alamo). Center lanes affected. Expect delays. Aug 13, 7:15 PM

CHP : Traffic Hazard on I-680 Northbound south of Stone Valley Rd (Alamo). Center lanes affected. Expect delays. Aug 13, 6:45 PM

CHP : Traffic Hazard on I-680 Northbound south of Stone Valley Rd (Alamo). Center lanes affected. Expect delays. Aug 13, 6:15 PM

Source: 511_sfbay · ID 511.org/1535299 First seen Aug 13, 2026 6:15 PM