CA · Highway

CA-4 W Accidents & Crashes

CA-4 W has recorded 303 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 June 10, 2026.

Breakdown by type: 218 accident, 74 construction.

292

Total Crashes

Filtered results

0

Fatalities

Fatal injury reports

3

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 292 results

218 accident 74 construction

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

Moderate Accident

Contra Costa 5 hours, 36 minutes ago

Caltrans : Roadwork on CA-4 Westbound between CA-160 (Antioch) and Hillcrest Ave (Antioch). Right lane and shoulder closed until 4 AM. From 7:00 PM Tuesday, June 09, 2026 to 4:00 AM Wednesday, June 10, 2026.

Contra Costa 11 hours, 6 minutes ago

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

Moderate Accident

Contra Costa 19 hours, 36 minutes ago

CHP : Residual delays on CA-4 Westbound east of Bailey Rd (Pittsburg). Right shoulder affected. Expect delays.

Moderate Accident

Contra Costa 1 day, 6 hours ago

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

Moderate Accident

Contra Costa 1 day, 7 hours ago

CHP : Residual delays on CA-4 Westbound at Sycamore Ave (Hercules). Right shoulder affected. Expect delays.

Moderate Accident

Contra Costa 1 day, 19 hours ago

CHP : Traffic Collision with Injuries on CA-4 Westbound east of Bailey Rd (Pittsburg). Left lane blocked. Expect delays.

Moderate Accident

Contra Costa 1 day, 20 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of Loveridge Rd (Pittsburg). Left lanes affected. Expect delays.

Moderate Accident

Contra Costa 1 day, 20 hours ago

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

Moderate Accident

Contra Costa 1 day, 22 hours ago

CHP : Residual delays on CA-4 Westbound west of Cummings Skwy (Port Costa). Left lane closed. Expect delays.

Moderate Accident

Contra Costa 1 day, 23 hours ago

Caltrans : Roadwork on CA-4 Westbound exiting at Hillcrest Ave (Antioch). Off Ramp closed until 5 AM. From 8:00 PM Sunday, June 07, 2026 to 5:00 AM Monday, June 08, 2026.

Contra Costa 2 days, 9 hours ago

CHP : Traffic Collision on CA-4 Westbound east of Sycamore Ave (Hercules). Lanes open. Expect delays.

Contra Costa 2 days, 20 hours ago

CHP : Residual delays on CA-4 Westbound west of Marsh Creek Rd (Brentwood). All lanes open. Expect delays.

Contra Costa 2 days, 20 hours ago

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

Moderate Accident

Contra Costa 3 days ago

CHP : Traffic Hazard on CA-4 Westbound at Pacheco Blvd (Pacheco). Right shoulder affected. Expect delays.

Moderate Accident

Contra Costa 3 days, 4 hours ago

CHP : Traffic Collision on CA-4 Westbound west of Bailey Rd (Pittsburg). Right shoulder affected. Expect delays.

Moderate Accident

Contra Costa 3 days, 7 hours ago

CHP : Traffic Collision on CA-4 Westbound west of Bailey Rd (Pittsburg). Right shoulder affected. Expect delays.

Moderate Accident

Contra Costa 3 days, 9 hours ago

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

Moderate Accident

Contra Costa 3 days, 18 hours ago

CHP : Disabled vehicle on CA-4 Westbound west of Somersville Rd (Antioch). Lane affected. Expect delays.

Moderate Accident

Contra Costa 3 days, 18 hours ago

CHP : Disabled vehicle on CA-4 Westbound west of Somersville Rd (Antioch). Left lane affected. Expect delays.

Moderate Accident

Contra Costa 3 days, 20 hours ago

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

Moderate Accident

Contra Costa 3 days, 20 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of Mcewen Rd (Martinez). Lane affected. Expect delays.

Moderate Accident

Contra Costa 3 days, 22 hours ago

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

Moderate Accident

Contra Costa 4 days, 2 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of Hillcrest Ave (Antioch). 2nd lane from the left affected. Expect delays.

Moderate Accident

Contra Costa 4 days, 2 hours ago

Caltrans : Roadwork on CA-4 Westbound between CA-242 N (Concord) and Pacheco Blvd (Pacheco). Various lanes closed until 9 AM. From 8:00 PM Friday, June 05, 2026 to 9:00 AM Saturday, June 06, 2026.

Contra Costa 4 days, 11 hours ago

Caltrans : Roadwork on CA-4 Westbound between Pacheco Blvd (Pacheco) and Center Ave (Martinez). Various lanes closed until 11 AM. From 7:00 PM Friday, June 05, 2026 to 11:00 AM Saturday, June 06, 2026.

Contra Costa 4 days, 11 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of CA-160 (Antioch). Right lane blocked. Expect delays.

Moderate Accident

Contra Costa 4 days, 16 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of Laurel Rd (Antioch). 2nd lane from the left blocked. Expect delays.

Moderate Accident

Contra Costa 4 days, 17 hours ago

CHP : Traffic Collision with Injuries on CA-4 Westbound entering at Port Chicago Hwy (Concord). On Ramp blocked. Expect delays.

Contra Costa 4 days, 17 hours ago

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

Moderate Accident

Contra Costa 4 days, 19 hours ago

CHP : Residual delays on CA-4 Westbound east of CA-242 N (Concord). Right shoulder affected. Expect delays.

Moderate Accident

Contra Costa 4 days, 20 hours ago

CHP : Disabled vehicle on CA-4 Westbound east of Port Chicago Hwy (Concord). Lane affected. Expect delays.

Moderate Accident

Contra Costa 5 days, 5 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of Alhambra Ave (Martinez). Left lane blocked. Expect delays.

Moderate Accident

Contra Costa 5 days, 6 hours ago

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

Contra Costa 5 days, 6 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of Sycamore Ave (Hercules). Lane blocked. Expect delays.

Moderate Accident

Contra Costa 5 days, 7 hours ago

CHP : Disabled vehicle on CA-4 Westbound west of San Joaquin County Line (Byron). Left lane blocked. Expect delays.

Moderate Accident

Contra Costa 5 days, 8 hours ago

Caltrans : Roadwork on CA-4 Westbound between CA-160 (Antioch) and Hillcrest Ave (Antioch). Left lane and shoulder closed until 5 AM. From 7:30 PM Thursday, June 04, 2026 to 5:00 AM Friday, June 05, 2026.

Contra Costa 5 days, 9 hours ago

Caltrans : Roadwork on CA-4 Westbound between Sand Creek Rd (Brentwood) and Lone Tree Way Bypass (Antioch). Left lane and shoulder closed until 5 AM. From 8:00 PM Thursday, June 04, 2026 to 5:00 AM Friday, June 05, 2026.

Contra Costa 5 days, 11 hours ago

CHP : Traffic Hazard on CA-4 Westbound east of G St (Antioch). Lane affected. Expect delays.

Moderate Accident

Contra Costa 5 days, 20 hours ago

Caltrans : Roadwork on CA-4 Westbound at Discovery Bay Blvd (Discovery Bay). Lane closed until 3-30 PM. From 8:30 AM Thursday, June 04, 2026 to 3:30 PM Thursday, June 04, 2026.

Contra Costa 6 days, 3 hours ago

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

Moderate Accident

Contra Costa 6 days, 6 hours ago

Caltrans : Roadwork on CA-4 Westbound between CA-160 (Antioch) and Hillcrest Ave (Antioch). Left lane and shoulder closed until 4 AM. From 7:30 PM Wednesday, June 03, 2026 to 4:00 AM Thursday, June 04, 2026.

Contra Costa 6 days, 10 hours ago

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

Moderate Accident

Contra Costa 6 days, 19 hours ago

Caltrans : Roadwork on CA-4 Westbound at Discovery Bay Blvd (Discovery Bay). Lane closed until 3-30 PM. From 8:30 AM Wednesday, June 03, 2026 to 3:30 PM Wednesday, June 03, 2026.

Contra Costa 1 week ago

Caltrans : Roadwork on CA-4 Westbound between Laurel Rd (Antioch) and CA-160 (Antioch). Left lane and shoulder closed until 5 AM. From 7:30 PM Tuesday, June 02, 2026 to 5:00 AM Wednesday, June 03, 2026.

Contra Costa 1 week ago

Caltrans : Roadwork on CA-4 Westbound between CA-160 (Antioch) and Hillcrest Ave (Antioch). Left lane and shoulder closed until 3 AM. From 7:30 PM Tuesday, June 02, 2026 to 3:00 AM Wednesday, June 03, 2026.

Contra Costa 1 week ago

CHP : Traffic Hazard on CA-4 Westbound east of Cummings Skwy (Port Costa). 2nd lane from the left affected. Expect delays.

Moderate Accident

Contra Costa 1 week ago

Caltrans : Roadwork on CA-4 Westbound at Discovery Bay Blvd (Discovery Bay). Lane closed until 3-30 PM. From 8:30 AM Tuesday, June 02, 2026 to 3:30 PM Tuesday, June 02, 2026.

Contra Costa 1 week ago

Caltrans : Roadwork on CA-4 Westbound between Laurel Rd (Antioch) and CA-160 (Antioch). Left lane and shoulder closed until 5 AM. From 7:30 PM Monday, June 01, 2026 to 5:00 AM Tuesday, June 02, 2026.

Contra Costa 1 week, 1 day ago

Caltrans : Roadwork on CA-4 Eastbound and Westbound between Walnut Blvd (Brentwood) and Balfour Rd (Antioch). All lanes closed. Avoid the area. From 7:30 PM Monday, June 01, 2026 to 5:00 AM Tuesday, June 02, 2026.

Contra Costa 1 week, 1 day ago