Crash
Eastbound State Route 4 Crash Brings Ambulance Response Near Lone Tree Way

Incident record
August 9, 2026
6:20 p.m.
eastbound State Route 4 at the Lone Tree Way off-ramp
Contra Costa County, CA
California
—
1 injured
None reported
Report body
A traffic collision was reported the evening of Aug. 9 on eastbound State Route 4 at the Lone Tree Way off-ramp in Contra Costa County, according to California Highway Patrol dispatch records. An ambulance was requested to the location around 6:20 p.m., which typically indicates the possibility of injuries, though their extent was not confirmed in the dispatch entry.
The number of vehicles involved and what led to the crash were not part of the CHP dispatch record, and no injury count was specified.
Related resources
California accident information
- Injury statute of limitations
- 2 years (From date of injury (CCP 335.1).)
- Wrongful death statute of limitations
- 2 years (From date of death (CCP 377.60).)
- Fault rule
- California uses pure comparative negligence: partial fault reduces recovery proportionally but does not bar it.
- Citations
- CCP 335.1 (SoL); CCP 377.60 (wrongful death); pure comparative per Li v. Yellow Cab
- Crash report agency
- California Highway Patrol (CHP 190 request) for CHP-investigated crashes; local police/sheriff otherwise.
This information is provided for general educational purposes only and is not legal advice. Consult a licensed attorney in your state for guidance about your specific situation.
Recent crashes in Contra Costa County
- Pittsburg Crash on Eastbound Highway 4 Leaves Injury Status Unreported
- Walnut Creek Crash on Roberts Road Prompts Ambulance Call
- Injury Extent Not Confirmed in Westbound I-80 Crash in Hercules
- Discovery Bay Crash at Cumberland Way and Winchester Loop Leaves Injury Status Unclear
- Discovery Bay Crash on State Route 4 Prompts Ambulance Response
- Deer Valley Road Crash in Contra Costa County Prompts Ambulance Response