Accident High Severity Resolved

CHP : Traffic Collision with Injuries on I-680 Southbound ramp to CA-4 W (Martinez). Connector ramp blocked. Expect delays.

A high-severity accident was reported on I-680 S near Contra Costa on September 17, 2026 at 12:52 AM.

Road

I-680 S

Area

Contra Costa

Address

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Started

Sep 16, 5:52 PM

Last Updated

1 month, 1 week ago

Sep 16, 6:00 PM

Resolved

Sep 17, 12:00 AM

Coordinates

37.9954, -122.0719

Update History

1 observations

CHP : Traffic Collision with Injuries on I-680 Southbound ramp to CA-4 W (Martinez). Connector ramp blocked. Expect delays. Sep 16, 6:00 PM

Source: 511_sfbay · ID 511.org/1550495 First seen Sep 16, 2026 6:00 PM