CA · Highway

CA-4 W Accidents & Crashes

CA-4 W has recorded 58 traffic crashes in California since 2024, with no fatalities on record. In the last 24 hours, 3 new crashes were reported. The highest crash volumes are concentrated near Contra Costa.

Data is sourced from the California Crash Records System (CCRS), maintained by the California Highway Patrol and updated daily, and the CA 511 live incident feed, refreshed every 15 minutes. Records include crash severity, injury data, vehicle information, and precise geographic coordinates. Last updated April 22, 2026.

Breakdown by type: 12 accident.

12

Total Crashes

Filtered results

0

Fatalities

Fatal injury reports

1

Today

Reported since midnight

Today's Accidents Today's Fatalities

Crash locations on CA-4 W. Click a marker to view details.

Crash Records

CA-4 W Incidents 12 results

12 accident

CHP : Disabled vehicle on CA-4 Westbound ramp to I-80 W (Hercules). Connector ramp affected. Expect delays.

Contra Costa 4 hours, 3 minutes ago

CHP : Traffic Collision on CA-4 Westbound east of I-80 W (Hercules). Lane affected. Expect delays.

Contra Costa 1 day, 1 hour ago

CHP : Traffic Hazard on CA-4 Westbound east of A St (Antioch). On Ramp affected. Expect delays.

Contra Costa 3 days, 3 hours ago

CHP : Traffic Hazard on CA-4 Westbound ramp to I-680 N (Martinez). Connector ramp affected. Expect delays.

Contra Costa 6 days, 16 hours ago

CHP : Traffic Collision on CA-4 Westbound east of I-80 W (Hercules). Left lane blocked. Expect delays.

Contra Costa 1 week, 2 days ago

CHP : Traffic Collision on CA-4 Westbound east of Balfour Rd (Antioch). Lane blocked. Expect delays.

Contra Costa 1 week, 3 days ago

CHP : Severe traffic alert and Traffic Collision with Injuries on CA-4 Westbound east of Bailey Rd (Pittsburg). Left lanes blocked. Expect delays.

Contra Costa 1 week, 4 days ago

CHP : Disabled vehicle on CA-4 Westbound exiting at Somersville Rd (Antioch). Off Ramp affected. Expect delays.

Contra Costa 1 week, 4 days ago

CHP : Signal problem on CA-4 Eastbound and Westbound at Walnut Blvd (Brentwood). Lanes affected. Expect delays.

Contra Costa 1 week, 4 days ago

CHP : Traffic Collision on CA-4 Westbound east of Bailey Rd (Pittsburg). On Ramp affected. Expect delays.

Contra Costa 1 week, 5 days ago

CHP : Traffic Collision on CA-4 Westbound entering at Alhambra Ave (Martinez). On Ramp blocked. Expect delays.

Contra Costa 2 weeks ago

CHP : Disabled vehicle on CA-4 Westbound at Lone Tree Way Bypass (Antioch). On Ramp blocked. Expect delays.

Contra Costa 2 weeks, 2 days ago