US-101 S · Last 48 Hours

Accident on US-101 S Today

28 accidents on US-101 S in the last 24 hours · 28 in 48 hours · updated April 12, 2026 5:33 AM PDT

28

Last 24h

28

Last 48h

1

High Severity

27

Accident

1

Construction

Last 6 hours

3 incidents

CHP : Traffic Collision on US-101 Southbound at E Hillsdale Blvd (San Mateo). Lane affected. Expect delays.

CHP : Traffic Collision with Injuries on US-101 Southbound north of Ralston Ave (Belmont). Lanes open. Expect delays.

CHP : Traffic Collision on US-101 Southbound at Theresa Dr (Cloverdale). Left shoulder affected. Expect delays.

12–24 hours ago

9 incidents

13h ago 3:45 PM

CHP : Residual delays on US-101 Southbound north of Miller Creek Rd (Unincorporated). All lanes open. Expect delays.

15h ago 2:00 PM

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

17h ago 12:15 PM

CHP : Traffic Hazard on US-101 Southbound north of Sister Cities Blvd (South San Francisco). Lane affected. Expect delays.

17h ago 12:15 PM

CHP : Traffic Hazard on US-101 Southbound north of Hellyer Ave (San Jose). Lane affected. Expect delays.

19h ago 10:30 AM

CHP : Disabled vehicle on US-101 Southbound north of River Rd (Unincorporated). Lane blocked. Expect delays.

19h ago 9:45 AM

CHP : Traffic Hazard on US-101 Southbound entering at Ralston Ave (Belmont). On Ramp blocked. Expect delays.

21h ago 8:15 AM

CHP : Residual delays on US-101 Southbound north of Miller Creek Rd (Unincorporated). Right shoulder affected. Expect delays.

22h ago 7:15 AM

CHP : Traffic Hazard on US-101 Southbound north of CA-1 N (Sausalito). Lanes blocked. Expect delays.

23h ago 6:00 AM

CHP : Traffic Collision with Injuries on US-101 Southbound north of Bellam Blvd (San Rafael). Lane open. Expect delays.

24–48 hours ago

16 incidents

1d ago 12:00 AM

CHP : Traffic Hazard on US-101 Southbound north of Ignacio Blvd (Novato). Left lane 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 7 AM. From 9:00 PM Friday, April 10, 2026 to 7:00 AM Saturday, April 11, 2026.

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

CHP : Brush fire on US-101 Southbound north of Woodside Rd (Redwood City). Right shoulder affected. Expect delays.

CHP : Brush fire on US-101 Southbound north of Whipple Ave (Redwood City). Right shoulder affected. Expect delays.

CHP : Traffic Collision on US-101 Southbound north of Hearn Ave (Santa Rosa). Lane affected. Expect delays.

CHP : Landslide on US-101 Southbound north of Conzelman Rd (Sausalito). Right and center lanes blocked. Expect delays.

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

1d ago 11:45 AM

CHP : Traffic Hazard on US-101 Southbound south of Rodeo Ave (Sausalito). Right lane affected. Expect delays.

1d ago 11:15 AM

CHP : Traffic Hazard on US-101 Southbound south of College Ave (Santa Rosa). Left lane affected. Expect delays.

1d ago 11:00 AM

CHP : Traffic Hazard on US-101 Southbound north of Canyon Rd (Geyserville). Left lane affected. Expect delays.

1d ago 10:45 AM

CHP : Traffic Collision on US-101 Southbound ramp to I-280 S (san Francisco) (San Francisco). Right lane blocked. Expect delays.

1d ago 10:15 AM

CHP : Residual delays on US-101 Southbound south of Rodeo Ave (Sausalito). All lanes open. Expect delays.

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

CHP : Disabled vehicle on US-101 Southbound north of Petaluma Blvd S (Petaluma). Right shoulder affected. Expect delays.

CHP : Traffic Hazard on US-101 Southbound north of Shiloh Rd (Windsor). HOV affected. Expect delays.

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