Tragic Multi-Vehicle Crash on State Route 805 in San Diego

Emergency response at a multi-vehicle crash site on State Route 805

San Diego, December 8, 2025

Early Sunday morning, a devastating multi-vehicle accident occurred on State Route 805 in San Diego, involving a big rig and other vehicles. The collision happened around 2:50 a.m., resulting in at least one confirmed fatality. The California Highway Patrol responded swiftly, issuing a SigAlert to manage traffic. An ongoing investigation aims to uncover the causes and circumstances surrounding this tragic event, raising essential questions about road safety protocols and driver behavior. The impact of such accidents stretches beyond immediate tragedy, affecting local traffic and commerce.

San Diego, CA – Tragic Multi-Vehicle Crash on State Route 805

San Diego was the scene of a fatal multi-vehicle collision early Sunday morning involving a big rig and several other vehicles. The incident took place on State Route 805 around 2:50 a.m., south of University Avenue, raising serious concerns about road safety and the protocols in place for managing such emergencies.

The California Highway Patrol (CHP) promptly responded to the incident, underscoring the severity of the situation. Within less than an hour, a SigAlert was issued at 3:37 a.m. to close the transition road connecting the northbound State Route 805 to northbound State Route 15. While at least one fatality has been confirmed, details regarding the total number of victims and specific circumstances surrounding the crash remain under investigation.

Details of the Incident

Initial reports indicate that the collision involved a big rig along with multiple vehicles on the northbound lanes of State Route 805. The CHP continues to conduct a thorough investigation to ascertain the cause of the crash, examining factors such as driver behavior and road conditions that contribute to such tragic events.

Background on Multi-Vehicle Collisions

Incidents like this highlight the significant dangers posed by multi-vehicle collisions involving large trucks. Such accidents can lead not only to tragic loss of life but also extensive traffic disruptions, affecting daily commutes and local businesses. The quick response from the CHP and subsequent traffic management measures demonstrate the effectiveness of emergency protocols in San Diego. Investigating these incidents can help identify systemic issues and improve roadway safety, which is crucial for the thriving economy and interactions within the community.

Current Investigation Status

The ongoing investigation by the CHP aims to gather all necessary evidence to understand the unfolding circumstances. Key areas of focus will include vehicle conditions, the behavior of all drivers involved, and any environmental conditions that may have contributed to the crash. Addressing these factors can eventually lead to more effective interventions and preventive measures to enhance safety for all road users.

Frequently Asked Questions (FAQ)

What happened in the multi-vehicle crash on State Route 805 in San Diego?
A fatal multi-vehicle collision occurred early Sunday morning on State Route 805 in San Diego, involving a big rig and multiple other vehicles. The incident took place around 2:50 a.m. on the northbound route, south of University Avenue.
How did the California Highway Patrol respond to the crash?
The CHP responded promptly, issuing a SigAlert at 3:37 a.m. to close the transition road connecting northbound State Route 805 to northbound State Route 15.
What is the current status of the investigation into the crash?
The CHP is currently investigating the cause of the crash.
Were there any other incidents involving big rigs in San Diego recently?
Yes, there have been other incidents involving big rigs in San Diego. For example, on March 5, 2025, a semi-truck caught fire after a multi-vehicle crash on I-15 near Highway 76.
What measures are being taken to prevent such crashes in the future?
Investigations into such crashes typically focus on factors such as driver behavior, vehicle conditions, and road conditions to determine the cause and prevent future occurrences.

Key Features of the Incident

Feature Details
Location State Route 805, northbound, south of University Avenue, San Diego, CA
Time of Incident Approximately 2:50 a.m., Sunday, December 7, 2025
Involved Vehicles Big rig and multiple other vehicles
Response CHP issued a SigAlert at 3:37 a.m., closing the transition road to northbound State Route 15
Fatalities At least one confirmed; exact number not disclosed
Investigation Status Ongoing by CHP to determine the cause of the crash

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STAFF HERE SAN DIEGO WRITER
Author: STAFF HERE SAN DIEGO WRITER

The SAN DIEGO STAFF WRITER represents the experienced team at HERESanDiego.com, your go-to source for actionable local news and information in San Diego, San Diego County, and beyond. Specializing in "news you can use," we cover essential topics like product reviews for personal and business needs, local business directories, politics, real estate trends, neighborhood insights, and state news affecting the area—with deep expertise drawn from years of dedicated reporting and strong community input, including local press releases and business updates. We deliver top reporting on high-value events such as Comic-Con International, San Diego County Fair, and San Diego Pride Festival. Our coverage extends to key organizations like the San Diego Regional Chamber of Commerce and United Way of San Diego County, plus leading businesses in biotechnology, healthcare, and technology that power the local economy such as Qualcomm, Illumina, and Scripps Health. As part of the broader HERE network, including HEREAnaheim.com, HEREBeverlyHills.com, HERECostaMesa.com, HERECoronado.com, HEREHollywood.com, HEREHuntingtonBeach.com, HERELongBeach.com, HERELosAngeles.com, HEREMissionViejo.com, and HERESantaAna.com, we provide comprehensive, credible insights into California's dynamic landscape.

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