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MARTINEZ, Contra Costa County, Calif., Oct. 23, 2026 — A two-vehicle crash with reported injuries blocked lanes on northbound Interstate 680 near the Martinez toll plaza Thursday evening, October 22, the California Highway Patrol said.
The collision was reported shortly after 6 p.m. on northbound I-680, just north of the toll plaza. One of the vehicles involved, a black Toyota Camry, sustained major front-end damage.
CHP initially classified the call as a collision with unknown injuries before upgrading it to a crash requiring an ambulance response. A CHP unit requested a tow for the damaged Camry, and a traffic break was called near Marina Vista to allow emergency crews to work the scene.
The crash blocked the number one lane and backed up traffic toward the bridge approach. All lanes on northbound I-680 were reported reopened by about 6:16 p.m.
The cause of the crash remains under investigation. We hope everyone who was hurt makes a swift and full recovery.
More on Crashes in Martinez, CA
This crash happened on Interstate 680 in Martinez, CA. We cover crashes across Contra Costa County as they're reported, and you can browse the latest in our Contra Costa County accident reports.
Frequently Asked Questions
Does speed make a difference in how serious a crash is?
Yes. Higher speeds give drivers less time to react and increase the force of impact, which tends to raise the chances of serious injury even in a crash involving only two vehicles.
Why is distracted driving considered so risky on highways like I-680?
A driver who glances away from the road for even a few seconds at highway speed can miss a sudden lane change or slowdown, leaving little time to brake or steer clear.
Can weather or road conditions cause crashes even on clear days?
Conditions like wet pavement, glare, or heavy merging traffic near toll plazas can reduce traction and visibility, making routine lane changes and stops more difficult to execute safely.
What to Do After a Car Accident in Martinez, CA
If you're involved in a crash on a busy highway corridor like I-680, try to move your vehicle out of traffic lanes if it's safe to do so, and turn on hazard lights to warn oncoming cars. Call 911 to report the crash and request medical help if anyone feels hurt, since some injuries don't show symptoms immediately. Stay with your vehicle in a protected area until help arrives instead of standing near moving traffic. Once you're safe, document the scene with photos and get the names and contact information of anyone involved or nearby. Follow up with a doctor in the days after the crash, even for minor aches, and keep a record of any medical visits related to the incident.
