Crash on Brea Canyon Rd at Washington St, Diamond Bar, California

Thursday, July 9, 2026 at 9:25 AM

Injury crash2 vehicles

Reporting agency: Los Angeles County Sheriff's Office
Report number: 926-04461-2928-471

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

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Who can ask: Parties of proper interest under Vehicle Code 20012: drivers, passengers, injured persons, vehicle and property owners, and their attorneys and insurers. There is no public copy.

Los Angeles County Sheriff's Office: phone (562) 345-4441; address Records and Identification Bureau, 12440 East Imperial Highway, Suite 120, Norwalk, CA 90650; its request page is linked below.

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Where and when

Location: Brea Canyon Rd at Washington St
City, county: Diamond Bar, Los Angeles County
Collision type: Head-On
Motor vehicle involved with: Other Motor Vehicle
Posted speed limit: 40 / 35 mph
Primary collision factor cited: No
Weather: Clear
Light: Daylight
Road surface: No Unusual Conditions
Hit and run: No
People involved: 3
Injured: 2
Killed: 0

Vehicles and people

Damage area not recorded

Unit 1: 2013 Honda Civic

Silver Passenger Car Station Wagon Jeep

Direction of travel: North
Maneuver: Proceeding Straight

Driver, female, 82Restraint: Occupant Lap Shoulder Harness Used. Airbag: Air Bag Deployed
Possible injury
Passenger, female, 83Restraint: Occupant Lap Shoulder Harness Used. Airbag: Air Bag Deployed
Possible injury

Damage area not recorded

Unit 2: 2023 BMW X5

White Sport Utility Vehicle

Direction of travel: East
Maneuver: Making Left Turn

Driver, female, 37Restraint: Occupant Lap Shoulder Harness Used. Airbag: Air Bag Not Deployed
Not injured

What the officer recorded

Violation cited: 21453(a)as 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

17 crashes recorded on Brea Canyon Rd in Diamond Bar in the last 12 months, 5 with injuries.

Aug 8, 2026, SR-60 E/B (Pomona Fwy) at Brea Canyon Raoad2 vehiclesProperty damage only
Aug 8, 2026, SR-57 S/B (Orange Fwy) at Pathfinder Road2 vehiclesProperty damage only
Aug 8, 2026, SR-60 W/B (Pomona Fwy) at Lemon Ave2 vehiclesProperty damage only
Aug 7, 2026, SR-57 N/B (Orange Fwy) to SR-60 E/B (Pomona Fwy) at SR-60 E/B (Pomona Fwy)2 vehiclesProperty damage only
Aug 5, 2026, SR-60 E/B (Pomona Fwy) at Fairway Dr.2 vehiclesProperty damage only

All Diamond Bar crashes, July 2026

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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