Accident High Severity Resolved

CHP : Traffic Hazard on I-680 Northbound entering at Alcosta Blvd (San Ramon). On Ramp affected. Expect delays.

A high-severity accident was reported on I-680 N near Contra Costa on July 15, 2026 at 12:20 AM.

Road

I-680 N

Area

Contra Costa

Address

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Started

Jul 14, 5:20 PM

Last Updated

2 weeks, 1 day ago

Jul 14, 6:00 PM

Resolved

Jul 15, 12:15 AM

Coordinates

37.7236, -121.9400

Update History

2 observations

CHP : Traffic Hazard on I-680 Northbound entering at Alcosta Blvd (San Ramon). On Ramp affected. Expect delays. Jul 14, 6:00 PM

CHP : Traffic Hazard on I-680 Northbound entering at Alcosta Blvd (San Ramon). On Ramp affected. Expect delays. Jul 14, 5:45 PM

Source: 511_sfbay · ID 511.org/1521042 First seen Jul 14, 2026 5:45 PM