CA-4 W · Last 48 Hours

CA-4 W Accident Today

6 accidents on CA-4 W in the last 24 hours · 11 in 48 hours · updated July 29, 2026 6:16 PM PDT

6

Last 24h

11

Last 48h

0

High Severity

32

This Week

8

Construction

3

Accident

7-Day Trend

32 crashes

↑ More than last week

32 crashes in the last 7 days, up 33% vs the previous week.

6–12 hours ago

1 incident

11h ago 6:45 AM

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

12–24 hours ago

5 incidents

20h ago 9:30 PM

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

21h ago 9:00 PM

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.

22h ago 7:45 PM

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.

22h ago 7:45 PM

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.

23h ago 6:45 PM

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.

24–48 hours ago

5 incidents

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

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.

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.

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.

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.

Frequently Asked Questions

Are accidents on CA-4 W reported live?

Yes — this page refreshes throughout the day as new incidents are logged by the California Highway Patrol. Crash data typically appears within 15–30 minutes of being reported.

How many accidents happened on CA-4 W in the last 7 days?

32 crashes were reported on CA-4 W in the last 7 days.

What type of accident is most common on CA-4 W?

Construction are the most frequently reported incident type on CA-4 W based on recent data.

Where can I see all California accidents today?

A live feed of all active crashes across California is available on the California accidents today page.

Where does this crash data come from?

Crash data is sourced from the California Highway Patrol (CHP) Computer-Aided Dispatch feed and the CCRS historical crash database. Learn more about our data sources.