Florida Highway Patrol said the man was driving the semi-truck south on the interstate when he veered into the median.

ST. JOHNS COUNTY, Fla. — A 69-year-old Jacksonville man suffered critical injuries in a fiery semi-truck crash on I-95 in St. Johns County Thursday morning, according to the Florida Highway Patrol.

The crash caused all southbound and northbound lanes on the interstate to shut down temporarily.

According to FHP, the man was driving a semi-truck south on I-95 near State Road 207 at 10:18 a.m. when he veered left, crossed the left lane and entered the median.

FHP said the semi-truck then overturned on top of the guardrail and became engulfed in flames.

The man was then taken to UF Health Shands Gainesville. No other drivers were reported injured.

Troopers said it is unclear at this time what caused the man to veer off the interstate. The investigation is ongoing.