Crash on Brea Canyon Cutoff Rd at 57 Freeway Off Ramp SB, Diamond Bar, California

Monday, April 13, 2026 at 2:49 PM

Property damage only2 vehicles

Reporting agency: Los Angeles County Sheriff's Office
Report number: 926-02578-2929-472

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

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Where and when

Location: Brea Canyon Cutoff Rd at 57 Freeway Off Ramp SB
City, county: Diamond Bar, Los Angeles County
Collision type: Side Swipe
Motor vehicle involved with: Other Motor Vehicle
Posted speed limit: 40 mph
Weather: Cloudy
Light: Daylight
Road surface: No Unusual Conditions
Hit and run: No
People involved: 2
Injured: 0
Killed: 0

Vehicles and people

Damage area not recorded

Unit 1: 2014 Mazda CX-5

White Passenger Car Station Wagon Jeep

Direction of travel: South
Maneuver: Proceeding Straight

Driver, male, 66Restraint: Occupant Lap Shoulder Harness Used. Airbag: Air Bag Not Deployed
Not injured

Damage area not recorded

Unit 2: 2019 Chevrolet Colorado

Red Pickups and Panels

Direction of travel: South
Maneuver: Making Left Turn

Driver, male, 59Restraint: Occupant Lap Shoulder Harness Used. Airbag: Air Bag Not Deployed
Not injured

Nearby and recent

1 crash recorded on Brea Canyon Cutoff Rd in Diamond Bar in the last 12 months, 0 with injuries.

May 12, 2026, SR-57 N/B (Orange Fwy) at Pathinder Rd.3 vehiclesProperty damage only
May 11, 2026, SR-57 N/B (Orange Fwy) at Pathfinder Rd2 vehiclesProperty damage only
May 8, 2026, SR-57 S/B (Orange Fwy) at Brea Canyon Rd2 vehiclesProperty damage only
May 5, 2026, SR-57 SB From Diamond Bar Blvd at Diamond Bar Blvd3 vehicles, 1 injuredInjury crash
May 3, 2026, SR-57 S/B (Orange Fwy) at Diamond Bar Blvd2 vehiclesProperty damage only

All Diamond Bar crashes, April 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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