Accident High Severity Resolved

CHP : Traffic Hazard on I-680 Southbound at Arthur Rd (Martinez). Off Ramp blocked. Expect delays.

A high-severity accident was reported on I-680 S near Contra Costa on September 28, 2026 at 1:00 AM.

Road

I-680 S

Area

Contra Costa

Address

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Started

Sep 27, 6:00 PM

Last Updated

4 weeks, 1 day ago

Sep 27, 6:30 PM

Resolved

Sep 28, 12:45 AM

Coordinates

38.0132, -122.0908

Update History

1 observations

CHP : Traffic Hazard on I-680 Southbound at Arthur Rd (Martinez). Off Ramp blocked. Expect delays. Sep 27, 6:00 PM

Source: 511_sfbay · ID 511.org/1555643 First seen Sep 27, 2026 6:00 PM