CA · County

Contra Costa Car Accidents & Crashes

Contra Costa County has recorded 5,517 traffic crashes since 2024, with no fatalities on record. In the last 24 hours, 48 new crashes were reported. Crash volume is highest on CA-4 W and CA-4 E.

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. CCRS records include party details, injury severity, vehicle information, and precise geographic coordinates. Last updated Oct. 27, 2026.

Breakdown by type: 3,860 accident, 1,655 construction, 2 closure.

5,517

Total Crashes

Filtered results

0

Fatalities

Fatal injury reports

43

Today

Reported since midnight

Today's Accidents Today's Fatalities

showing most recent 500 incidents with location data · click a marker to view details

Crash Records

Contra Costa Incidents 5,517 results

3860 accident 1655 construction 2 closure

CHP : Traffic Hazard on I-680 Southbound entering at Willow Pass Rd (Concord). On Ramp blocked. Expect delays.

I-680 S 8 minutes ago Live

Caltrans : Long-term construction on I-580 Westbound entering at Western Dr (Richmond). On Ramp closed. Expect delays. From 5:15 AM Monday, September 28, 2026 to 12:00 AM Monday, May 24, 2027.

I-580 W 8 minutes ago Live

Caltrans : Bridge work on I-580 Eastbound at Richmond San Rafael Bridge (Richmond). Right shoulder closed until 2 PM. From 4:00 AM Tuesday, October 27, 2026 to 2:00 PM Tuesday, October 27, 2026.

I-580 E 23 minutes ago

CHP : Traffic Hazard on I-680 Northbound south of Newell Ave (Walnut Creek). Left and center lanes affected. Expect delays.

Moderate Accident

I-680 N 53 minutes ago

CHP : Disabled vehicle on I-80 Eastbound exiting at Central Ave (Richmond). Off Ramp affected. Expect delays.

I-80 E 1 hour, 23 minutes ago

CHP : Traffic Hazard on CA-242 Northbound exiting at Grant St (Concord). Center lanes affected. Expect delays.

Moderate Accident

CA-242 N 1 hour, 38 minutes ago

CHP : Traffic Collision on CA-4 Eastbound ramp to I-680 S (Martinez). Connector ramp affected. Expect delays.

CA-4 E 3 hours, 53 minutes ago

Caltrans : Roadwork on CA-160 Southbound south of Main St (Antioch). Right lane blocked. Expect delays. From 9:15 AM Tuesday, October 27, 2026 to 10:00 AM Tuesday, October 27, 2026.

CA-160 S 4 hours, 8 minutes ago

Caltrans : Roadwork on I-80 Eastbound between Cutting Blvd (El Cerrito) and Solano Ave (Richmond). Right lane and shoulder closed until 2 PM. From 8:30 AM Tuesday, October 27, 2026 to 2:00 PM Tuesday, October 27, 2026.

I-80 E 4 hours, 53 minutes ago

CHP : Traffic Collision on I-680 Southbound north of Alcosta Blvd (San Ramon). Left lane blocked. Expect delays.

Moderate Accident

I-680 S 4 hours, 53 minutes ago

CHP : Traffic Hazard on CA-4 Eastbound east of San Pablo Ave (Hercules). Right lane affected. Expect delays.

CA-4 E 5 hours, 23 minutes ago

CHP : Traffic Hazard on CA-4 Westbound west of Discovery Bay Blvd (Discovery Bay). Lane affected. Expect delays.

Moderate Accident

CA-4 W 5 hours, 53 minutes ago

CHP : Traffic Hazard on CA-4 Westbound north of Byron Hwy (Brentwood). Lane affected. Expect delays.

Moderate Accident

CA-4 W 6 hours, 8 minutes ago

CHP : Residual delays on I-680 Southbound entering at Monument Blvd (Pleasant Hill). Right shoulder affected. Expect delays.

Moderate Accident

I-680 S 6 hours, 8 minutes ago

CHP : Traffic Hazard on I-580 Eastbound west of Garrard Blvd (Richmond). 2nd lane from the left affected. Expect delays.

Moderate Accident

I-580 E 6 hours, 8 minutes ago

CHP : Residual delays on I-680 Southbound north of Willow Pass Rd (Concord). Right shoulder affected. Expect delays.

Moderate Accident

I-680 S 6 hours, 38 minutes ago

CHP : Traffic Hazard on I-680 Southbound north of Willow Pass Rd (Concord). 2nd lane from the left affected. Expect delays.

Moderate Accident

I-680 S 6 hours, 38 minutes ago

CHP : Traffic Collision on I-580 Westbound at S 23RD St (Richmond). Left and center lanes blocked. Expect delays.

Moderate Accident

I-580 W 7 hours, 8 minutes ago

CHP : Traffic Collision with Injuries on CA-24 Westbound east of Acalanes Rd (Lafayette). Lane affected. Expect delays.

Moderate Accident

CA-24 W 7 hours, 23 minutes ago

CHP : Fire on I-80 Eastbound entering at Solano Ave (Richmond). Right shoulder affected. Expect delays.

Moderate Accident

I-80 E 7 hours, 23 minutes ago

CHP : Traffic Collision on CA-242 Southbound south of Concord Ave (Concord). Left lane blocked. Expect delays.

Moderate Accident

CA-242 S 7 hours, 38 minutes ago

Caltrans : Roadwork on I-80 Eastbound exiting at Cummings Skwy (Crockett). Off Ramp closed until 7 AM. From 7:00 PM Monday, October 26, 2026 to 7:00 AM Tuesday, October 27, 2026.

I-80 E 8 hours, 53 minutes ago

Caltrans : Roadwork on I-680 Southbound between Sycamore Valley Rd (Danville) and Bollinger Canyon Rd (San Ramon). Various lanes closed until 5 AM. From 8:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

I-680 S 9 hours, 8 minutes ago

Caltrans : Roadwork on I-680 Southbound between Bollinger Canyon Rd (San Ramon) and Alcosta Blvd (San Ramon). Various lanes closed until 5 AM. From 8:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

I-680 S 9 hours, 8 minutes ago

Caltrans : Roadwork on I-680 Northbound between Bollinger Canyon Rd (San Ramon) and Sycamore Valley Rd (Danville). Various lanes closed until 5 AM. From 8:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

I-680 N 9 hours, 8 minutes ago

Caltrans : Roadwork on I-680 Southbound exiting at Bollinger Canyon Rd (San Ramon). Off Ramp closed until 5 AM. From 8:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

I-680 S 9 hours, 8 minutes ago

Caltrans : Roadwork on I-580 Westbound between Castro St (Richmond) and Western Dr (Richmond). Right lane and shoulder closed until 6 AM. From 7:00 PM Monday, October 26, 2026 to 6:00 AM Tuesday, October 27, 2026.

I-580 W 9 hours, 8 minutes ago

Caltrans : Roadwork on I-580 Westbound between Castro St (Richmond) and Western Dr (Richmond). Right shoulder closed until 5 AM. From 9:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

I-580 W 9 hours, 8 minutes ago

Caltrans : Roadwork on CA-4 Eastbound and Westbound between Balfour Rd (Brentwood) and Byron Hwy (Brentwood). All lanes closed. Avoid the area. From 7:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

CA-4 E 9 hours, 23 minutes ago

Caltrans : Roadwork on CA-4 Eastbound and Westbound between Byron Hwy (Brentwood) and Balfour Rd (Antioch). All lanes closed. Avoid the area. From 7:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

CA-4 W 9 hours, 23 minutes ago

CHP : Traffic Hazard on CA-24 Eastbound north of Camino Pablo (Orinda). Lane affected. Expect delays.

Moderate Accident

CA-24 E 11 hours, 38 minutes ago

Caltrans : Roadwork on CA-4 Eastbound at Sand Creek Rd (Brentwood). All lanes closed until 5 AM. From 7:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

CA-4 E 11 hours, 38 minutes ago

Caltrans : Roadwork on CA-4 Eastbound at Bixler Rd (Discovery Bay). All lanes closed until 5 AM. From 7:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

CA-4 E 11 hours, 38 minutes ago

Caltrans : Roadwork on CA-4 Eastbound at Walnut Blvd (Brentwood). All lanes closed until 5 AM. From 7:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

CA-4 E 11 hours, 38 minutes ago

Caltrans : Roadwork on I-680 Southbound entering at Crow Canyon Rd (San Ramon). On Ramp closed until 4 AM. From 9:00 PM Monday, October 26, 2026 to 4:00 AM Tuesday, October 27, 2026.

I-680 S 11 hours, 53 minutes ago

Caltrans : Roadwork on I-680 Northbound exiting at Stone Valley Rd (Alamo). Off Ramp closed until 6-30 AM. From 8:00 PM Monday, October 26, 2026 to 6:30 AM Tuesday, October 27, 2026.

I-680 N 11 hours, 53 minutes ago

Caltrans : Roadwork on I-680 Northbound exiting at Stone Valley Rd (Alamo). Off Ramp closed until 6-30 AM. From 8:00 PM Monday, October 26, 2026 to 6:30 AM Tuesday, October 27, 2026.

I-680 N 11 hours, 53 minutes ago

Caltrans : Roadwork on I-680 Northbound between Stone Valley Rd (Alamo) and Livorna Rd (Alamo). Various lanes closed until 5 AM. From 8:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

I-680 N 11 hours, 53 minutes ago

Caltrans : Roadwork on I-680 Northbound entering at Stone Valley Rd (Alamo). On Ramp closed until 5 AM. From 9:00 PM Monday, October 26, 2026 to 5:00 AM Tuesday, October 27, 2026.

I-680 N 11 hours, 53 minutes ago

Caltrans : Roadwork on CA-4 Eastbound at Discovery Bay Blvd (Discovery Bay). Lane closed. One way traffic control in effect. From 8:00 PM Monday, October 26, 2026 to 4:00 AM Tuesday, October 27, 2026.

CA-4 E 14 hours, 53 minutes ago

CHP : Disabled vehicle on CA-4 Westbound east of CA-160 (Antioch). Center lane blocked. Expect delays.

Moderate Accident

CA-4 W 17 hours, 38 minutes ago

CHP : Traffic Hazard on I-680 Southbound north of Crow Canyon Rd (San Ramon). Left lane affected. Expect delays.

Moderate Accident

I-680 S 19 hours, 38 minutes ago

CHP : Traffic Hazard on I-680 Northbound south of CA-242 N (Concord). Left lane affected. Expect delays.

Moderate Accident

I-680 N 20 hours, 23 minutes ago

CHP : Brush fire on I-680 Northbound exiting at Treat Blvd (Walnut Creek). Right lane blocked. Expect delays.

Moderate Accident

I-680 N 20 hours, 23 minutes ago

Caltrans : Roadwork on I-680 Southbound entering at Stone Valley Rd (Alamo). On Ramp closed until 6 PM. From 10:00 AM Monday, October 26, 2026 to 6:00 PM Monday, October 26, 2026.

I-680 S 20 hours, 53 minutes ago

CHP : Disabled vehicle on CA-4 Eastbound entering at Willow Pass Rd (Pittsburg). Left lane blocked. Expect delays.

Moderate Accident

CA-4 E 22 hours, 23 minutes ago

CHP : Traffic Hazard on I-680 Northbound south of Waterfront Rd (Martinez). Right lane affected. Expect delays.

Moderate Accident

I-680 N 22 hours, 38 minutes ago

CHP : Traffic Collision with Injuries on I-680 Southbound north of Willow Pass Rd (Concord). Right lane blocked. Expect delays.

Moderate Accident

I-680 S 22 hours, 53 minutes ago

CHP : Traffic Hazard on CA-4 Eastbound west of Sand Creek Rd (Brentwood). Lane affected. Expect delays.

CA-4 E 23 hours, 38 minutes ago

CHP : Traffic Hazard on I-680 Southbound north of W El Pintado (Danville). Lanes blocked. Expect delays.

Moderate Accident

I-680 S 23 hours, 53 minutes ago