CA · Highway

CA-4 W Accidents & Crashes

CA-4 W has recorded 567 traffic crashes in California since 2024, with no fatalities on record. In the last 24 hours, 6 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 July 29, 2026.

Breakdown by type: 381 accident, 186 construction.

567

Total Crashes

All time records

0

Fatalities

Fatal injury reports

6

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

381 accident 186 construction

CHP : Traffic Collision with Injuries on CA-4 Westbound exiting at Lone Tree Way Bypass (Antioch). Right lane blocked. Expect delays.

Moderate Accident

Contra Costa 5 hours, 28 minutes ago

Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 5 AM. From 6:00 PM Tuesday, July 28, 2026 to 5:00 AM Wednesday, July 29, 2026.

Contra Costa 8 hours, 28 minutes ago

Caltrans : Roadwork on CA-4 Westbound between Laurel Rd (Antioch) and CA-160 (Antioch). Right lane and shoulder closed until 5 AM. From 7:00 PM Tuesday, July 28, 2026 to 5:00 AM Wednesday, July 29, 2026.

Contra Costa 9 hours, 28 minutes ago

Caltrans : Roadwork on CA-4 Westbound between Lone Tree Way Bypass (Antioch) and Laurel Rd (Antioch). Right lane and shoulder closed until 5 AM. From 7:00 PM Tuesday, July 28, 2026 to 5:00 AM Wednesday, July 29, 2026.

Contra Costa 9 hours, 28 minutes ago

Caltrans : Roadwork on CA-4 Westbound exiting at Laurel Rd (Antioch). Off Ramp closed until 5 AM. From 6:00 PM Tuesday, July 28, 2026 to 5:00 AM Wednesday, July 29, 2026.

Contra Costa 14 hours, 28 minutes ago

CHP : Traffic Hazard on CA-4 Westbound at CA-160 (Antioch). Lane affected. Expect delays.

Moderate Accident

Contra Costa 15 hours, 28 minutes ago

CHP : Traffic Collision on CA-4 Westbound at Willow Pass Rd (Concord). Lane affected. Expect delays.

Moderate Accident

Contra Costa 1 day, 6 hours ago

Caltrans : Roadwork on CA-4 Westbound exiting at Lone Tree Way Bypass (Antioch). Off Ramp closed until 5 AM. From 6:00 PM Monday, July 27, 2026 to 5:00 AM Tuesday, July 28, 2026.

Contra Costa 1 day, 12 hours ago

Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 5 AM. From 6:00 PM Monday, July 27, 2026 to 5:00 AM Tuesday, July 28, 2026.

Contra Costa 1 day, 12 hours ago

Caltrans : Roadwork on CA-4 Westbound between Lone Tree Way Bypass (Antioch) and Laurel Rd (Antioch). Various lanes closed until 5 AM. From 7:00 PM Monday, July 27, 2026 to 5:00 AM Tuesday, July 28, 2026.

Contra Costa 1 day, 12 hours ago

Caltrans : Roadwork on CA-4 Westbound between Sand Creek Rd (Brentwood) and Lone Tree Way Bypass (Antioch). Various lanes closed until 5 AM. From 7:00 PM Monday, July 27, 2026 to 5:00 AM Tuesday, July 28, 2026.

Contra Costa 1 day, 12 hours ago

CHP : Residual delays on CA-4 Westbound at L St (Antioch). Center Divider affected. Expect delays.

Contra Costa 1 day, 19 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of Willow Pass Rd (Concord). Right lane affected. Expect delays.

Moderate Accident

Contra Costa 2 days, 3 hours ago

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

Moderate Accident

Contra Costa 2 days, 7 hours ago

Caltrans : Roadwork on CA-4 Westbound exiting at San Jose Ave (Antioch). Off Ramp closed until 5 AM. From 6:00 PM Sunday, July 26, 2026 to 5:00 AM Monday, July 27, 2026.

Contra Costa 2 days, 9 hours ago

Caltrans : Roadwork on CA-4 Westbound between Balfour Rd (Antioch) and Sand Creek Rd (Brentwood). Various lanes closed until 5 AM. From 7:00 PM Sunday, July 26, 2026 to 5:00 AM Monday, July 27, 2026.

Contra Costa 2 days, 9 hours ago

Caltrans : Roadwork on CA-4 Westbound entering at Sand Creek Rd (Brentwood). On Ramp closed until 5 AM. From 6:00 PM Sunday, July 26, 2026 to 5:00 AM Monday, July 27, 2026.

Contra Costa 2 days, 9 hours ago

Caltrans : Roadwork on CA-4 Westbound between Sand Creek Rd (Brentwood) and Lone Tree Way Bypass (Antioch). Various lanes closed until 5 AM. From 7:00 PM Sunday, July 26, 2026 to 5:00 AM Monday, July 27, 2026.

Contra Costa 2 days, 9 hours ago

CHP : Traffic Collision with Injuries on CA-4 Westbound west of Alhambra Ave (Martinez). Lane affected. Expect delays.

Moderate Accident

Contra Costa 2 days, 13 hours ago

CHP : Disabled vehicle on CA-4 Westbound east of I-680 N (Martinez). Lane affected. Expect delays.

Moderate Accident

Contra Costa 2 days, 16 hours ago

CHP : Traffic Collision with Injuries on CA-4 Westbound east of G St (Antioch). Lanes open. Expect delays.

Contra Costa 2 days, 20 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of Hillcrest Ave (Antioch). 3rd lane from the left affected. Expect delays.

Moderate Accident

Contra Costa 3 days ago

CHP : Traffic Hazard on CA-4 Westbound west of I-680 N (Martinez). Right lane affected. Expect delays.

Moderate Accident

Contra Costa 3 days, 1 hour ago

CHP : Traffic Collision with Injuries on CA-4 Westbound exiting at Loveridge Rd (Pittsburg). Lanes affected. Expect delays.

Moderate Accident

Contra Costa 3 days, 5 hours ago

CHP : Disabled vehicle on CA-4 Westbound at Bailey Rd (Pittsburg). 2nd lane from the left affected. Expect delays.

Moderate Accident

Contra Costa 3 days, 6 hours ago

CHP : Disabled vehicle on CA-4 Westbound east of Hillcrest Ave (Antioch). Lane affected. Expect delays.

Moderate Accident

Contra Costa 3 days, 16 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of San Joaquin County Line (Byron). Lane affected. Expect delays.

Moderate Accident

Contra Costa 3 days, 22 hours ago

CHP : Traffic Collision on CA-4 Westbound at Willow Pass Rd (Concord). Lane affected. Expect delays.

Moderate Accident

Contra Costa 4 days ago

CHP : Disabled vehicle on CA-4 Westbound east of Loveridge Rd (Pittsburg). Lane blocked. Expect delays.

Moderate Accident

Contra Costa 4 days, 1 hour ago

CHP : Traffic Collision with Injuries on CA-4 Westbound west of Byron Hwy (Brentwood). Lanes open. Expect delays.

Contra Costa 4 days, 6 hours ago

CHP : Grass fire on CA-4 Westbound exiting at Lone Tree Way Bypass (Antioch). Off Ramp affected. Expect delays.

Contra Costa 5 days, 5 hours ago

Caltrans : Roadwork on CA-4 Westbound entering at Sand Creek Rd (Brentwood). On Ramp closed until 5 AM. From 7:00 PM Thursday, July 23, 2026 to 5:00 AM Friday, July 24, 2026.

Contra Costa 5 days, 9 hours ago

Caltrans : Roadwork on CA-4 Westbound between Balfour Rd (Antioch) and Sand Creek Rd (Brentwood). Various lanes closed until 5 AM. From 7:00 PM Thursday, July 23, 2026 to 5:00 AM Friday, July 24, 2026.

Contra Costa 5 days, 9 hours ago

Caltrans : Roadwork on CA-4 Westbound exiting at San Jose Ave (Antioch). Off Ramp closed until 5 AM. From 7:00 PM Thursday, July 23, 2026 to 5:00 AM Friday, July 24, 2026.

Contra Costa 5 days, 9 hours ago

Caltrans : Roadwork on CA-4 Westbound entering at Balfour Rd (Antioch). On Ramp closed until 5 AM. From 7:00 PM Thursday, July 23, 2026 to 5:00 AM Friday, July 24, 2026.

Contra Costa 5 days, 9 hours ago

CHP : Disabled vehicle on CA-4 Westbound east of Bailey Rd (Pittsburg). Right lane blocked. Expect delays.

Moderate Accident

Contra Costa 5 days, 15 hours ago

Caltrans : Roadwork on CA-4 Westbound between Balfour Rd (Antioch) and Sand Creek Rd (Brentwood). Various lanes closed until 5 AM. From 7:00 PM Wednesday, July 22, 2026 to 5:00 AM Thursday, July 23, 2026.

Contra Costa 6 days, 7 hours ago

Caltrans : Roadwork on CA-4 Westbound entering at Balfour Rd (Antioch). On Ramp closed until 5 AM. From 7:00 PM Wednesday, July 22, 2026 to 5:00 AM Thursday, July 23, 2026.

Contra Costa 6 days, 7 hours ago

Caltrans : Roadwork on CA-4 Westbound entering at Balfour Rd (Antioch). On Ramp closed until 5 AM. From 7:00 PM Wednesday, July 22, 2026 to 5:00 AM Thursday, July 23, 2026.

Contra Costa 6 days, 7 hours ago

CHP : Traffic Collision on CA-4 Westbound east of Mcewen Rd (Martinez). Right shoulder affected. Expect delays.

Moderate Accident

Contra Costa 6 days, 12 hours ago

CHP : Disabled vehicle on CA-4 Westbound east of Hillcrest Ave (Antioch). Lane affected. Expect delays.

Moderate Accident

Contra Costa 6 days, 13 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of Pacheco Blvd (Pacheco). Lane affected. Expect delays.

Moderate Accident

Contra Costa 6 days, 17 hours ago

Caltrans : Roadwork on CA-4 Westbound between CA-160 (Antioch) and Hillcrest Ave (Antioch). Various lanes closed until 4 AM. From 8:00 PM Tuesday, July 21, 2026 to 4:00 AM Wednesday, July 22, 2026.

Contra Costa 1 week ago

CHP : Disabled vehicle on CA-4 Westbound east of Loveridge Rd (Pittsburg). Right shoulder affected. Expect delays.

Moderate Accident

Contra Costa 1 week ago

CHP : Water main break on CA-4 Westbound east of G St (Antioch). Lanes affected. Expect delays.

Moderate Accident

Contra Costa 1 week, 1 day ago

Caltrans : Roadwork on CA-4 Westbound exiting at Balfour Rd (Antioch). Off Ramp closed until 5 AM. From 7:00 PM Monday, July 20, 2026 to 5:00 AM Tuesday, July 21, 2026.

Contra Costa 1 week, 1 day ago

Caltrans : Roadwork on CA-4 Westbound entering at Balfour Rd (Antioch). On Ramp closed until 5 AM. From 7:00 PM Monday, July 20, 2026 to 5:00 AM Tuesday, July 21, 2026.

Contra Costa 1 week, 1 day ago

CHP : Traffic Hazard on CA-4 Westbound entering at Railroad Ave (Pittsburg). Left lane blocked. Expect delays.

Moderate Accident

Contra Costa 1 week, 2 days ago

CHP : Disabled vehicle on CA-4 Westbound west of Hillcrest Ave (Antioch). 3rd lane from the left blocked. Expect delays.

Moderate Accident

Contra Costa 1 week, 2 days ago

CHP : Disabled vehicle on CA-4 Westbound exiting at Loveridge Rd (Pittsburg). Right lane blocked. Expect delays.

Moderate Accident

Contra Costa 1 week, 2 days ago