San Diego, CA, December 8, 2025

A tragic multi-vehicle collision occurred early Sunday morning on State Route 805 in San Diego, resulting in one fatality. The crash involved a big rig and led to significant traffic disruptions. Authorities issued a SigAlert to close the transition road connecting northbound State Route 805 to northbound State Route 15 as they investigate the incident. Commuters are advised to find alternative routes during the traffic congestion caused by the accident.

San Diego, CA – Fatal Multi-Vehicle Crash Involving Big Rig on State Route 805

San Diego, CA – A fatal multi-vehicle collision occurred early Sunday morning on State Route 805, resulting in one death and significant traffic disruptions.

Crash Details

The incident took place around 2:50 a.m. on the northbound lanes of State Route 805, south of University Avenue. A big rig was involved in the crash, leading to the death of one individual. In response, authorities issued a SigAlert at 3:37 a.m., closing the transition road connecting northbound State Route 805 to northbound State Route 15. The California Highway Patrol is investigating the cause of the crash. No further details have been released at this time.

Traffic Impact

The closure of the transition road caused significant traffic delays in the area. Commuters were advised to seek alternative routes to avoid the affected sections of the freeway. The California Highway Patrol worked diligently to clear the scene and reopen the lanes as quickly as possible.

Background

Multi-vehicle accidents involving big rigs are not uncommon in the San Diego area. Such incidents often lead to severe traffic disruptions and pose significant challenges for emergency responders. The California Highway Patrol continues to monitor and manage traffic conditions to ensure public safety.

Safety Reminders

Authorities urge drivers to exercise caution, especially during early morning hours when visibility may be reduced. Adhering to posted speed limits and staying alert can help prevent accidents and ensure the safety of all road users.

Investigation Ongoing

The California Highway Patrol is actively investigating the circumstances surrounding the crash. Updates will be provided as more information becomes available. Drivers are encouraged to stay informed through official channels and plan their routes accordingly to avoid potential delays.

Related Incidents

San Diego has experienced several significant traffic incidents in recent months. For instance, a semi-truck caught fire after a multi-vehicle crash on I-15 near Highway 76 in March 2025, leading to lane closures and traffic disruptions. Additionally, a big rig overturned on southbound I-15 in the Mira Mesa area in July 2025, causing a major backup on the freeway. These incidents highlight the importance of safe driving practices and the need for vigilance on the roads.

Community Support

The San Diego community is encouraged to support local initiatives aimed at promoting road safety. Programs that educate drivers about safe driving habits and the importance of vehicle maintenance can play a crucial role in reducing accidents and saving lives.

Conclusion

The fatal crash on State Route 805 serves as a somber reminder of the potential dangers on the road. Drivers are urged to remain vigilant, adhere to traffic laws, and prioritize safety to prevent such tragic events in the future.

FAQ

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        "text": "A SigAlert is a traffic advisory issued by the California Highway Patrol to inform the public of significant traffic incidents or hazards that may require road closures or detours. In this case, the SigAlert was issued to alert drivers about the closure of the transition road due to the crash."
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      "name": "How can I avoid traffic delays caused by such incidents?",
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        "text": "To avoid traffic delays, drivers are advised to seek alternative routes when possible, especially during peak hours. Staying informed through official channels and planning your route ahead of time can help you navigate around affected areas."
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      "name": "Are there any ongoing investigations related to this crash?",
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