Life Threatening Semi-Truck Accident on I-95 in St. Johns County, FL on June 11, 2026

All lanes of I-95 at mile marker 310 in St. Johns County were reported closed after a semi-truck crash and fire on Thursday, June 11, 2026. The roadway later reopened, but the incident caused a significant emergency response along a busy stretch of the interstate.

Authorities said the crash involved a southbound semi-truck on I-95. The truck had been traveling in the center lane before moving left, crossing the left lane, and entering the center median. Officials had not announced a final reason for that movement.

The semi struck the center guardrail and overturned, coming to rest in the grassy median on its left side. The truck then caught fire. The reported final position of the vehicle, on or near the guardrail in the median, likely complicated the response and contributed to the lane closures while crews worked at the scene.

St. Johns County Fire Rescue said one person was taken in critical condition to a local burn center. No name, age, or additional medical update was released in the available reports. There was no confirmed report of another vehicle being involved.

The circumstances leading up to the crash remain under review. At this stage, authorities have not reported charges, fault, impairment, or a final cause. Those details often depend on scene evidence, vehicle inspection findings, witness statements, and any available roadway or dash camera footage.

For families and others affected by a serious I-95 truck crash, it can be helpful to keep medical records, insurance correspondence, photos, and any information about witnesses or the vehicle’s condition. An official crash report may later clarify the timeline and the findings reached by investigators.