Crash on CA-4 Off Ramp Intersection of Lone Tree Way and a Street at Lone Tree Way, Antioch, California

Wednesday, January 7, 2026 at 8:25 AM

Injury crashBicyclist involved2 vehicles

From the CHP CCRS, record last updated October 25, 2026. No changes since first published.

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Location: CA-4 Off Ramp Intersection of Lone Tree Way and a Street at Lone Tree Way
City, county: Antioch, Contra Costa County
Collision type: Broadside
Motor vehicle involved with: Bicycle
Posted speed limit: 40 mph
Primary collision factor cited: No
Weather: Clear
Light: Daylight
Road surface: No Unusual Conditions
Hit and run: No
People involved: 2
Injured: 1
Killed: 0

Bicycle

Bicycle

Damage area not recorded

Passenger Car Station Wagon Jeep

Driver, female, 38Restraint: Occupant Lap Shoulder Harness Used. Airbag: Air Bag Not Deployed
Not injured

A contributing factor or charge recorded by an officer is not a finding of fault or a conviction. We show the record as the state released it.

1 crash recorded on CA-4 Off Ramp Intersection of Lone Tree Way and a Street in Antioch in the last 12 months, 1 with injuries.

Source: CHP CCRS
Updates: Changes the state makes to this record are applied here when the source publishes them
First published here: October 25, 2026
Last updated: October 25, 2026, no changes recorded
What is left out: Names, addresses, plates, and license and insurance numbers are not in the public data and never appear here

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