Crash on I-680 NB at Treat Blvd., Walnut Creek, California

Wednesday, December 24, 2025 at 3:25 AM

Property damage only2 vehicles
Reporting agency
CHP Contra Costa Area
Report number
9320-2025-04178

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

Where and when

Location
I-680 NB at Treat Blvd.
City, county
Walnut Creek, Contra Costa County
Collision type
Rear End
Motor vehicle involved with
Parked Motor Vehicle
Secondary weather
Raining
Posted speed limit
65 / 5 mph
Primary collision factor cited
No
Weather
Cloudy
Light
Dark-Street Lights
Road surface
No Unusual Conditions
Hit and run
No
People involved
1
Injured
0
Killed
0

Vehicles and people

Damage area not recorded

Unit 1: 2024 Hyundai Sonata

Black Passenger Car Station Wagon Jeep

Direction of travel
North
Maneuver
Other
  • Driver, male, 25Restraint: Occupant Lap Shoulder Harness Used. Airbag: Air Bag Deployed
    Not injured
Damage area not recorded

Unit 2: 2021 Wanco Wanco Inc. Trailer

Ong Highway Construction Equipment

Direction of travel
North
Maneuver
Parked

What the officer recorded

Violation cited
VC 22107 UNSAF TURN &/OR NO SIGNALas recorded on the report

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.

Nearby and recent

29 crashes recorded on I-680 NB in Walnut Creek in the last 12 months, 13 with injuries.

All Walnut Creek crashes, December 2025

About this record

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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