Accident Moderate Severity Resolved

CHP : Traffic Collision on I-680 Northbound at Stone Valley Rd (Alamo). Right shoulder affected. Expect delays.

A injury accident was reported on I-680 N near Contra Costa on August 29, 2026 at 9:04 AM.

Road

I-680 N

Area

Contra Costa

Address

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Started

Aug 29, 2:04 AM

Last Updated

1 day, 2 hours ago

Aug 29, 2:30 AM

Resolved

Aug 29, 8:45 AM

Coordinates

37.8480, -122.0276

Update History

1 observations

CHP : Traffic Collision on I-680 Northbound at Stone Valley Rd (Alamo). Right shoulder affected. Expect delays. Aug 29, 2:15 AM

Source: 511_sfbay · ID 511.org/1542433 First seen Aug 29, 2026 2:15 AM