CA · Highway

CA-84 W Accidents & Crashes

CA-84 W has recorded 77 traffic crashes in California since 2024, with no fatalities on record. In the last 24 hours, 1 new crash were reported. The highest crash volumes are concentrated near Alameda and San Mateo.

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 11, 2026.

Breakdown by type: 40 construction, 36 accident.

76

Total Crashes

Filtered results

0

Fatalities

Fatal injury reports

1

Today

Reported since midnight

Today's Accidents Today's Fatalities

Crash locations on CA-84 W. Click a marker to view details.

Crash Records

CA-84 W Incidents 76 results

40 construction 36 accident

CHP : Grass fire on CA-84 Westbound exiting at Thornton Ave (Newark). Off Ramp affected. Expect delays.

Alameda 8 hours, 16 minutes ago

CHP : Traffic Collision on CA-84 Westbound west of Little Valley Rd (Sunol). Lane affected. Expect delays.

Moderate Accident

Alameda 3 days, 19 hours ago

Caltrans : Roadwork on CA-84 Eastbound and Westbound between Pleasanton Sunol Rd (Scotts Corner) and Kilkare Rd (Sunol). All lanes closed. Avoid the area. From 8:00 PM Friday, June 05, 2026 to 5:00 AM Saturday, June 06, 2026.

Alameda 5 days, 11 hours ago

Caltrans : Roadwork on CA-84 Eastbound and Westbound between Pleasanton Sunol Rd (Scotts Corner) and Kilkare Rd (Sunol). All lanes closed. Avoid the area. From 8:00 PM Thursday, June 04, 2026 to 5:00 AM Friday, June 05, 2026.

Alameda 6 days, 11 hours ago

CHP : Brush fire on CA-84 Westbound east of Ardenwood Blvd (Newark). Right shoulder affected. Expect delays.

Moderate Accident

Alameda 1 week ago

Caltrans : Roadwork on CA-84 Eastbound and Westbound between Pleasanton Sunol Rd (Scotts Corner) and Kilkare Rd (Sunol). All lanes closed. Avoid the area. From 8:00 PM Wednesday, June 03, 2026 to 5:00 AM Thursday, June 04, 2026.

Alameda 1 week ago

CHP : Traffic Hazard on CA-84 Westbound at Dumbarton Bridge - Midspan (Fremont). Lanes blocked. Expect delays.

Alameda 1 week ago

CHP : Disabled vehicle on CA-84 Westbound at Dumbarton Bridge - Midspan (Fremont). Right lane blocked. Expect delays.

Alameda 1 week, 1 day ago

Caltrans : Roadwork on CA-84 Eastbound and Westbound between Pleasanton Sunol Rd (Scotts Corner) and Kilkare Rd (Sunol). All lanes closed. Avoid the area. From 8:00 PM Tuesday, June 02, 2026 to 5:00 AM Wednesday, June 03, 2026.

Alameda 1 week, 1 day ago

CHP : Disabled vehicle on CA-84 Westbound east of I-880 N (Fremont). Right shoulder affected. Expect delays.

Moderate Accident

Alameda 1 week, 5 days ago

CHP : Traffic Hazard on CA-84 Westbound east of Dumbarton Bridge - Midspan (Fremont). Left and center lanes blocked. Expect delays.

Alameda 2 weeks, 1 day ago

CHP : Disabled vehicle on CA-84 Westbound east of Dumbarton Bridge - Midspan (Fremont). 2nd lane from the left blocked. Expect delays.

Alameda 2 weeks, 2 days ago

CHP : High winds on CA-84 Eastbound and Westbound between Dumbarton Bridge - Toll Plaza (Fremont) and University Ave (Menlo Park). Lanes affected. Traffic advisory in effect.

Alameda 2 weeks, 3 days ago

CHP : Traffic Hazard on CA-84 Westbound west of Thornton Ave (Newark). Lane affected. Expect delays.

Moderate Accident

Alameda 2 weeks, 6 days ago

CHP : Traffic Hazard on CA-84 Westbound west of Dumbarton Bridge - Toll Plaza (Fremont). Right lane affected. Expect delays.

Alameda 3 weeks ago

Caltrans : Roadwork on CA-84 Westbound between Pleasanton Sunol Rd (Scotts Corner) and Kilkare Rd (Sunol). All lanes closed. Avoid the area. From 8:00 PM Tuesday, May 19, 2026 to 5:00 AM Wednesday, May 20, 2026.

Alameda 3 weeks, 1 day ago

Caltrans : Roadwork on CA-84 Westbound at Alameda De Las Pulgas (Redwood City). Lane closed until 3 PM. From 9:00 AM Tuesday, May 19, 2026 to 3:00 PM Tuesday, May 19, 2026.

San Mateo 3 weeks, 2 days ago

Caltrans : Roadwork on CA-84 Westbound between Pleasanton Sunol Rd (Scotts Corner) and Kilkare Rd (Sunol). All lanes closed. Avoid the area. From 8:00 PM Monday, May 18, 2026 to 5:00 AM Tuesday, May 19, 2026.

Alameda 3 weeks, 2 days ago

Caltrans : Roadwork on CA-84 Westbound at Alameda De Las Pulgas (Redwood City). Lane closed until 3 PM. From 9:00 AM Monday, May 18, 2026 to 3:00 PM Monday, May 18, 2026.

San Mateo 3 weeks, 3 days ago

CHP : Fire on CA-84 Westbound east of Ardenwood Blvd (Newark). Lane affected. Expect delays.

Moderate Accident

Alameda 3 weeks, 4 days ago

CHP : Traffic Hazard on CA-84 Westbound at University Ave (Menlo Park). Lane blocked. Expect delays.

Moderate Accident

San Mateo 3 weeks, 4 days ago

CHP : Traffic Hazard on CA-84 Westbound at Dumbarton Bridge - Toll Plaza (Fremont). Lane affected. Expect delays.

San Mateo 3 weeks, 4 days ago

CHP : Traffic Collision with Injuries on CA-84 Westbound west of Dumbarton Bridge - Toll Plaza (Fremont). Right shoulder affected. Expect delays.

San Mateo 3 weeks, 4 days ago

CHP : Disabled vehicle on CA-84 Westbound east of Dumbarton Bridge - Midspan (Fremont). Lane affected. Expect delays.

Alameda 3 weeks, 4 days ago

Caltrans : Roadwork on CA-84 Westbound at Mission Blvd (Fremont). Lane closed. One way traffic control in effect. From 8:00 PM Friday, May 15, 2026 to 5:00 AM Saturday, May 16, 2026.

Alameda 3 weeks, 5 days ago

CHP : Traffic Hazard on CA-84 Westbound east of Thornton Ave (Newark). Left and center lanes affected. Expect delays.

Moderate Accident

Alameda 3 weeks, 6 days ago

Caltrans : Roadwork on CA-84 Westbound at CA-35 (Woodside). Lane closed. One way traffic control in effect. From 10:00 AM Friday, May 15, 2026 to 3:00 PM Friday, May 15, 2026.

San Mateo 3 weeks, 6 days ago

Caltrans : Roadwork on CA-84 Westbound at Paseo Padre Pky (Fremont). Lane closed until 7 AM. From 3:00 AM Friday, May 15, 2026 to 7:00 AM Friday, May 15, 2026.

Alameda 3 weeks, 6 days ago

Caltrans : Roadwork on CA-84 Westbound at Mission Blvd (Fremont). Lane closed. One way traffic control in effect. From 8:00 PM Thursday, May 14, 2026 to 5:00 AM Friday, May 15, 2026.

Alameda 3 weeks, 6 days ago

Caltrans : Roadwork on CA-84 Westbound at CA-35 (Woodside). Lane closed. One way traffic control in effect. From 10:00 AM Thursday, May 14, 2026 to 3:00 PM Thursday, May 14, 2026.

San Mateo 4 weeks ago

Caltrans : Roadwork on CA-84 Westbound at Mission Blvd (Fremont). Lane closed. One way traffic control in effect. From 8:00 PM Wednesday, May 13, 2026 to 5:00 AM Thursday, May 14, 2026.

Alameda 4 weeks ago

Caltrans : Roadwork on CA-84 Westbound at CA-35 (Woodside). Lane closed. One way traffic control in effect. From 10:00 AM Wednesday, May 13, 2026 to 3:00 PM Wednesday, May 13, 2026.

San Mateo 4 weeks, 1 day ago

Caltrans : Roadwork on CA-84 Westbound at US-101 S (Redwood City). Right lane and shoulder closed. From 10:00 PM Tuesday, May 12, 2026 to 6:00 AM Wednesday, May 13, 2026.

San Mateo 4 weeks, 1 day ago

Caltrans : Roadwork on CA-84 Westbound at Mission Blvd (Fremont). Lane closed. One way traffic control in effect. From 8:00 PM Tuesday, May 12, 2026 to 5:00 AM Wednesday, May 13, 2026.

Alameda 4 weeks, 1 day ago

Caltrans : Roadwork on CA-84 Eastbound and Westbound at CA-35 (Woodside). Lane closed. One way traffic control in effect. From 10:00 AM Tuesday, May 12, 2026 to 3:00 PM Tuesday, May 12, 2026.

San Mateo 4 weeks, 2 days ago

Caltrans : Roadwork on CA-84 Westbound at US-101 S (Redwood City). Right lane and shoulder closed. From 10:00 PM Monday, May 11, 2026 to 6:00 AM Tuesday, May 12, 2026.

San Mateo 4 weeks, 2 days ago

Caltrans : Roadwork on CA-84 Westbound at CA-35 (Woodside). Lane closed. One way traffic control in effect. From 10:00 AM Monday, May 11, 2026 to 3:00 PM Monday, May 11, 2026.

San Mateo 1 month ago

CHP : Traffic Collision on CA-84 Westbound west of I-280 N (Woodside). Left lane blocked. Expect delays.

Moderate Accident

San Mateo 1 month ago

CHP : Traffic Hazard on CA-84 Westbound west of Dumbarton Bridge - Midspan (Fremont). Lane blocked. Expect delays.

Alameda 1 month ago

Caltrans : Roadwork on CA-84 Westbound at Mission Blvd (Fremont). Lane closed. One way traffic control in effect. From 8:00 PM Friday, May 08, 2026 to 5:00 AM Saturday, May 09, 2026.

Alameda 1 month ago

Caltrans : Roadwork on CA-84 Westbound at CA-35 (Woodside). Lane closed. One way traffic control in effect. From 9:00 AM Friday, May 08, 2026 to 3:00 PM Friday, May 08, 2026.

San Mateo 1 month ago

Caltrans : Roadwork on CA-84 Westbound at Mission Blvd (Fremont). Lane closed. One way traffic control in effect. From 8:00 PM Thursday, May 07, 2026 to 5:00 AM Friday, May 08, 2026.

Alameda 1 month ago

Caltrans : Roadwork on CA-84 Westbound at CA-35 (Woodside). Lane closed. One way traffic control in effect. From 9:00 AM Thursday, May 07, 2026 to 3:00 PM Thursday, May 07, 2026.

San Mateo 1 month ago

Caltrans : Roadwork on CA-84 Westbound at Mission Blvd (Fremont). Lane closed. One way traffic control in effect. From 8:00 PM Wednesday, May 06, 2026 to 5:00 AM Thursday, May 07, 2026.

Alameda 1 month ago

Caltrans : Roadwork on CA-84 Eastbound and Westbound at CA-35 (Woodside). Lane closed. One way traffic control in effect. From 9:00 AM Wednesday, May 06, 2026 to 3:00 PM Wednesday, May 06, 2026.

San Mateo 1 month ago

Caltrans : Roadwork on CA-84 Westbound at Mission Blvd (Fremont). Lane closed. One way traffic control in effect. From 8:00 PM Tuesday, May 05, 2026 to 5:00 AM Wednesday, May 06, 2026.

Alameda 1 month ago

Caltrans : Roadwork on CA-84 Eastbound and Westbound at CA-35 (Woodside). Lane closed. One way traffic control in effect. From 9:00 AM Tuesday, May 05, 2026 to 3:00 PM Tuesday, May 05, 2026.

San Mateo 1 month ago

Caltrans : Pothole Repair on CA-84 Westbound at I-280 S (Woodside). Lane closed until 5 AM. From 9:00 PM Monday, May 04, 2026 to 4:45 AM Tuesday, May 05, 2026.

San Mateo 1 month ago

Caltrans : Roadwork on CA-84 Westbound at Mission Blvd (Fremont). Lane closed. One way traffic control in effect. From 8:00 PM Monday, May 04, 2026 to 5:00 AM Tuesday, May 05, 2026.

Alameda 1 month ago

CHP : Traffic Hazard on CA-84 Westbound west of Dumbarton Bridge - Toll Plaza (Fremont). Lane affected. Expect delays.

San Mateo 1 month, 1 week ago