Accident Moderate Severity Stale

CHP : Traffic Collision on I-680 Southbound north of Alcosta Blvd (San Ramon). Left lane blocked. Expect delays.

A injury accident was reported on I-680 S near Contra Costa on October 27, 2026 at 3:31 PM.

Road

I-680 S

Area

Contra Costa

Address

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Started

Oct 27, 8:31 AM

Last Updated

1 hour, 24 minutes ago

Oct 27, 9:15 AM

Coordinates

37.7440, -121.9554

Update History

2 observations

CHP : Traffic Collision on I-680 Southbound north of Alcosta Blvd (San Ramon). Left lane blocked. Expect delays. Oct 27, 9:00 AM

CHP : Traffic Collision on I-680 Southbound north of Alcosta Blvd (San Ramon). Left lane blocked. Expect delays. Oct 27, 8:45 AM

Source: 511_sfbay · ID 511.org/1569181 First seen Oct 27, 2026 8:45 AM