US-101 S · Last 48 Hours

US-101 S Accident Today

34 accidents on US-101 S in the last 24 hours · 54 in 48 hours · updated May 29, 2026 11:19 PM PDT

34

Last 24h

54

Last 48h

7

High Severity

139

This Week

29

Construction

25

Accident

7-Day Trend

139 crashes

↓ Fewer than last week

139 crashes in the last 7 days, down 20% vs the previous week.

Last hour

3 incidents

34m ago 10:45 PM

Caltrans : Roadwork on US-101 Southbound between Mendocino Ave (Santa Rosa) and 7TH St (Santa Rosa). Right lane and shoulder closed until 5 AM. From 9:00 PM Friday, May 29, 2026 to 5:00 AM Saturday, May 30, 2026.

34m ago 10:45 PM

Caltrans : Roadwork on US-101 Southbound entering at Gravenstein Hwy (Cotati). On Ramp closed until 5 AM. From 9:00 PM Friday, May 29, 2026 to 5:00 AM Saturday, May 30, 2026.

49m ago 10:30 PM

Caltrans : Roadwork on US-101 Southbound between Gravenstein Hwy (Cotati) and W Railroad Ave (Cotati). Right lane and shoulder closed until 5 AM. From 9:00 PM Friday, May 29, 2026 to 5:00 AM Saturday, May 30, 2026.

Last 6 hours

8 incidents

Caltrans : Roadwork on US-101 Southbound entering at Petaluma Blvd N (Petaluma). On Ramp closed until 5 AM. From 9:00 PM Friday, May 29, 2026 to 5:00 AM Saturday, May 30, 2026.

Caltrans : Roadwork on US-101 Southbound between Petaluma Blvd N (Petaluma) and E Washington St (Petaluma). Right lane and shoulder closed until 5 AM. From 9:00 PM Friday, May 29, 2026 to 5:00 AM Saturday, May 30, 2026.

CHP : Disabled vehicle on US-101 Southbound north of Cesar Chavez St (San Francisco). Lane affected. Expect delays.

Caltrans : Roadwork on US-101 Southbound exiting at Manuel t Freitas Pky (San Rafael). Off Ramp closed until 5 AM. From 8:00 PM Friday, May 29, 2026 to 5:00 AM Saturday, May 30, 2026.

Caltrans : Roadwork on US-101 Southbound entering at Manuel t Freitas Pky (San Rafael). On Ramp closed until 5 AM. From 8:00 PM Friday, May 29, 2026 to 5:00 AM Saturday, May 30, 2026.

CHP : Traffic Hazard on US-101 Southbound ramp to I-280 N (san Jose) (San Jose). Connector ramp affected. Expect delays.

CHP : Traffic Hazard on US-101 Southbound south of Dry Creek Rd (Healdsburg). Lanes blocked. Expect delays.

CHP : Residual delays on US-101 Southbound south of Bowers Ave (Santa Clara). All lanes open. Expect delays.

6–12 hours ago

7 incidents

CHP : Traffic Hazard on US-101 Southbound north of Bernal Rd (San Jose). Right lane affected. Expect delays.

CHP : Traffic Hazard on US-101 Southbound north of Steele Ln (Santa Rosa). Lane affected. Expect delays.

CHP : Residual delays on US-101 Southbound north of Whipple Ave (Redwood City). All lanes open. Expect delays.

CHP : Disabled vehicle on US-101 Southbound north of Marsh Rd (Menlo Park). Lane affected. Expect delays.

CHP : Traffic Collision with Injuries on US-101 Southbound north of Whipple Ave (Redwood City). Lane blocked. Expect delays.

CHP : Traffic Collision on US-101 Southbound north of Cesar Chavez St (San Francisco). Left lane blocked. Expect delays.

CHP : Residual delays on US-101 Southbound north of Cesar Chavez St (San Francisco). All lanes open. Expect delays.

12–24 hours ago

16 incidents

14h ago 9:15 AM

CHP : Traffic Hazard on US-101 Southbound north of Lucky Dr (Corte Madera). Left lane blocked. Expect delays.

14h ago 8:45 AM

CHP : Traffic Hazard on US-101 Southbound south of Berryessa Rd (San Jose). Left lane blocked. Expect delays.

17h ago 6:00 AM

CHP : Traffic Hazard on US-101 Southbound exiting at Airport Pky (San Jose). Off Ramp affected. Expect delays.

18h ago 5:15 AM

Caltrans : Roadwork on US-101 Southbound between I-80 W (San Francisco) and Cesar Chavez St (San Francisco). Lane closed until 6 AM. From 10:00 PM Thursday, May 28, 2026 to 6:00 AM Friday, May 29, 2026.

18h ago 5:15 AM

Caltrans : Roadwork on US-101 Southbound entering at Harbor Blvd (Belmont). On Ramp closed until 6 AM. From 9:00 PM Thursday, May 28, 2026 to 6:00 AM Friday, May 29, 2026.

18h ago 5:15 AM

Caltrans : Roadwork on US-101 Southbound exiting at Ralston Ave (Belmont). Off Ramp closed until 6 AM. From 9:00 PM Thursday, May 28, 2026 to 6:00 AM Friday, May 29, 2026.

18h ago 5:15 AM

Caltrans : Roadwork on US-101 Southbound entering at Ralston Ave (Belmont). On Ramp closed until 6 AM. From 9:00 PM Thursday, May 28, 2026 to 6:00 AM Friday, May 29, 2026.

18h ago 5:15 AM

Caltrans : Roadwork on US-101 Southbound entering at Whipple Ave (Redwood City). On Ramp closed until 6 AM. From 8:00 PM Thursday, May 28, 2026 to 6:00 AM Friday, May 29, 2026.

18h ago 5:00 AM

Caltrans : Roadwork on US-101 Southbound exiting at College Ave (Santa Rosa). Off Ramp closed until 5 AM. From 9:00 PM Thursday, May 28, 2026 to 5:00 AM Friday, May 29, 2026.

18h ago 5:00 AM

Caltrans : Roadwork on US-101 Southbound entering at College Ave (Santa Rosa). On Ramp closed until 5 AM. From 9:00 PM Thursday, May 28, 2026 to 5:00 AM Friday, May 29, 2026.

18h ago 5:00 AM

Caltrans : Roadwork on US-101 Southbound entering at CA-12 W (Santa Rosa). On Ramp closed until 5 AM. From 9:00 PM Thursday, May 28, 2026 to 5:00 AM Friday, May 29, 2026.

18h ago 5:00 AM

Caltrans : Roadwork on US-101 Southbound between Mendocino Ave (Santa Rosa) and 7TH St (Santa Rosa). Right lane and shoulder closed until 5 AM. From 9:00 PM Thursday, May 28, 2026 to 5:00 AM Friday, May 29, 2026.

18h ago 4:45 AM

Caltrans : Roadwork on US-101 Southbound entering at Gravenstein Hwy (Cotati). On Ramp closed until 5 AM. From 9:00 PM Thursday, May 28, 2026 to 5:00 AM Friday, May 29, 2026.

18h ago 4:45 AM

Caltrans : Roadwork on US-101 Southbound between Gravenstein Hwy (Cotati) and W Railroad Ave (Cotati). Right lane and shoulder closed until 5 AM. From 9:00 PM Thursday, May 28, 2026 to 5:00 AM Friday, May 29, 2026.

18h ago 4:30 AM

Caltrans : Roadwork on US-101 Southbound entering at Petaluma Blvd N (Petaluma). On Ramp closed until 5 AM. From 9:00 PM Thursday, May 28, 2026 to 5:00 AM Friday, May 29, 2026.

19h ago 4:15 AM

Caltrans : Roadwork on US-101 Southbound between Petaluma Blvd N (Petaluma) and E Washington St (Petaluma). Right lane and shoulder closed until 5 AM. From 9:00 PM Thursday, May 28, 2026 to 5:00 AM Friday, May 29, 2026.

24–48 hours ago

20 incidents

CHP : Traffic Collision on US-101 Southbound ramp to I-80 E (San Francisco). Connector ramp affected. Expect delays.

Caltrans : Roadwork on US-101 Southbound between CA-85 S (san Jose) (San Jose) and Metcalf Rd (San Jose). Various lanes closed until 5 AM. From 8:00 PM Thursday, May 28, 2026 to 5:00 AM Friday, May 29, 2026.

CHP : Traffic Collision on US-101 Southbound north of 3RD St (San Rafael). Off Ramp affected. Expect delays.

CHP : Traffic Hazard on US-101 Southbound north of Lakeville St (Petaluma). Lane affected. Expect delays.

CHP : Traffic Hazard on US-101 Southbound at CA-12 E (Santa Rosa). Center lane blocked. Expect delays.

CHP : Residual delays on US-101 Southbound north of E Dunne Ave (Morgan Hill). Center Divider affected. Expect delays.

CHP : Traffic Hazard on US-101 Southbound ramp to I-280 S (san Jose) (San Jose). Connector ramp affected. Expect delays.

CHP : Residual delays on US-101 Southbound ramp to I-580 E (San Rafael). All lanes open. Expect delays.

CHP : Traffic Hazard on US-101 Southbound north of Cesar Chavez St (San Francisco). Lanes affected. Expect delays.

CHP : Residual delays on US-101 Southbound at University Ave (East Palo Alto). Right shoulder affected. Expect delays.

CHP : Disabled vehicle on US-101 Southbound north of Marin - San Francisco County Line (San Francisco). Lane blocked. Expect delays.

CHP : Traffic Hazard on US-101 Southbound north of Airport Pky (San Jose). Right lane blocked. Expect delays.

Caltrans : Roadwork on US-101 Southbound entering at E 4TH Ave (San Mateo). On Ramp closed until 6 AM. From 10:00 PM Wednesday, May 27, 2026 to 6:00 AM Thursday, May 28, 2026.

Caltrans : Roadwork on US-101 Southbound entering at E 3RD Ave (San Mateo). On Ramp closed until 6 AM. From 9:00 PM Wednesday, May 27, 2026 to 6:00 AM Thursday, May 28, 2026.

Caltrans : Roadwork on US-101 Southbound between I-80 W (San Francisco) and Cesar Chavez St (San Francisco). Lane closed until 6 AM. From 10:00 PM Wednesday, May 27, 2026 to 6:00 AM Thursday, May 28, 2026.

Caltrans : Roadwork on US-101 Southbound between Mansell St (San Francisco) and Beatty Rd (Brisbane). Lane closed until 6 AM. From 9:00 PM Wednesday, May 27, 2026 to 6:00 AM Thursday, May 28, 2026.

Caltrans : Roadwork on US-101 Southbound between Lakeville St (Petaluma) and San Antonio Rd (Unincorporated). Right lane and shoulder closed until 5 AM. From 9:00 PM Wednesday, May 27, 2026 to 5:00 AM Thursday, May 28, 2026.

Caltrans : Roadwork on US-101 Southbound entering at Lakeville St (Petaluma). On Ramp closed until 5 AM. From 9:00 PM Wednesday, May 27, 2026 to 5:00 AM Thursday, May 28, 2026.

Caltrans : Roadwork on US-101 Southbound exiting at Lakeville St (Petaluma). Off Ramp closed until 5 AM. From 9:00 PM Wednesday, May 27, 2026 to 5:00 AM Thursday, May 28, 2026.

1d ago 12:45 AM

Caltrans : Roadwork on US-101 Southbound between CA-85 S (san Jose) (San Jose) and Metcalf Rd (San Jose). Various lanes closed until 5 AM. From 8:00 PM Wednesday, May 27, 2026 to 5:00 AM Thursday, May 28, 2026.

Frequently Asked Questions

Are accidents on US-101 S 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 US-101 S in the last 7 days?

139 crashes were reported on US-101 S in the last 7 days.

What type of accident is most common on US-101 S?

Construction are the most frequently reported incident type on US-101 S 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.