By CHP – Contra Costa
PLEASANT HILL, CA – On Tuesday, August 12th, 2025, at approximately 8:14 a.m., officers assigned to the California Highway Patrol’s (CHP) Contra Costa Area office responded to a solo vehicle crash which occurred on the off-ramp of Interstate 680 (I-680) northbound to Monument Blvd., in the city of Pleasant Hill.
Our preliminary investigation indicates a silver Lexus SUV, occupied by one male adult driver, was traveling on I-680 northbound, just south of Monument Blvd. in the slow lane. For reasons still under investigation, the Lexus suddenly turned to its right, crossed over the reverse gore point, and drove on to the Monument Boulevard off-ramp. The driver subsequently lost control of the Lexus, traveled up the left embankment, and ultimately overturned.
Tragically, the driver was ejected during the crash, sustained fatal injuries, and was pronounced deceased at the scene. During the investigation it was determined driver was not wearing his seatbelt during the crash.
The I-680 northbound to Monument Blvd. off-ramp was closed at approximately 8:22 a.m., for on-scene investigation, and was re-opened at approximately 10:35 a.m.
This crash remains under investigation. If anyone witnessed the incident or the events leading up to it, please contact Contra Costa Area office in Martinez at (925) 646-4980 or email your contact information to 320Investigations@chp.ca.gov to be contacted by the investigating officer.
The Mission of the California Highway Patrol is to provide the highest level of Safety, Service, and Security.
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