Accident High Severity Resolved

CHP : Disabled vehicle on I-680 Southbound entering at Stone Valley Rd (Alamo). On Ramp blocked. Expect delays.

A high-severity accident was reported on I-680 S near Contra Costa on September 28, 2026 at 8:56 PM.

Road

I-680 S

Area

Contra Costa

Address

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Started

Sep 28, 1:56 PM

Last Updated

4 weeks ago

Sep 28, 3:00 PM

Resolved

Sep 28, 9:15 PM

Coordinates

37.8480, -122.0280

Update History

2 observations

CHP : Disabled vehicle on I-680 Southbound entering at Stone Valley Rd (Alamo). On Ramp blocked. Expect delays. Sep 28, 2:45 PM

CHP : Disabled vehicle on I-680 Southbound entering at Stone Valley Rd (Alamo). On Ramp blocked. Expect delays. Sep 28, 2:15 PM

Source: 511_sfbay · ID 511.org/1555949 First seen Sep 28, 2026 2:15 PM