Accident High Severity Stale

CHP : Traffic Collision on CA-4 Westbound entering at Balfour Rd (Antioch). On Ramp affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on November 3, 2026 at 4:21 PM.

Road

CA-4 W

Area

Contra Costa

Address

Loading…

Started

Nov 3, 8:21 AM

Last Updated

2 hours, 23 minutes ago

Nov 3, 9:15 AM

Coordinates

37.9319, -121.7359

Update History

2 observations

CHP : Traffic Collision on CA-4 Westbound entering at Balfour Rd (Antioch). On Ramp affected. Expect delays. Nov 3, 9:00 AM

CHP : Traffic Collision on CA-4 Westbound entering at Balfour Rd (Antioch). On Ramp affected. Expect delays. Nov 3, 8:30 AM

Source: 511_sfbay · ID 511.org/1572298 First seen Nov 3, 2026 8:30 AM