The Port, the Airport and the Roads Between
Miami moves freight by sea and by air, and both leave the city by truck. Trucks bound for PortMiami reach it through a toll-free, 4,200-foot tunnel under the bay that links the port directly to the MacArthur Causeway.
At the airport the volume is larger still. Miami International handled nearly 3.5 million tons of freight in 2025 and became the busiest airport in the United States for total freight, and that cargo reaches its warehouses by road.
So the expressways around downtown and the airport carry a steady stream of commercial traffic. If a truck hit you on one of them, the company behind the load may be based far from Florida, and our page on private fleets explains what changes when a company hauls its own goods.
