The Interstate Highways in the state of Florida are owned and maintained by the Florida Department of Transportation (FDOT).
[3] There are four primary interstate highways and eight auxiliary highways, with a ninth proposed, totaling 1,497.58 miles (2,410.12 km) interstate miles in Florida.
The longest interstate is I-75, extending 470.678 miles (757.483 km), and the shortest is I-395, extending just 1.292 miles (2.079 km).
[4]