Accident Moderate Severity Stale

CHP : Traffic Collision on I-680 Southbound north of Stone Valley Rd (Alamo). Lanes affected. Expect delays.

A injury accident was reported on I-680 S near Contra Costa on August 15, 2026 at 12:19 AM.

Road

I-680 S

Area

Contra Costa

Address

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Started

Aug 14, 5:19 PM

Last Updated

32 minutes ago

Aug 14, 5:30 PM

Coordinates

37.8526, -122.0291

Update History

2 observations

CHP : Traffic Collision on I-680 Southbound north of Stone Valley Rd (Alamo). Lanes affected. Expect delays. Aug 14, 5:30 PM

CHP : Traffic Collision on I-680 Southbound north of Stone Valley Rd (Alamo). Lane blocked. Expect delays. Aug 14, 5:15 PM

Source: 511_sfbay · ID 511.org/1535812 First seen Aug 14, 2026 5:15 PM