Dive summary:

• Fort Lauderdale-Hollywood International Airport – FLL on your luggage tag – needed to expand but had no vacant land, so the solution involves an 8,000-foot runway that rises 55 feet and is carried by concrete bridges over road and rail connector lines.
• The $1 billion project is turning a light-aircraft landing strip into a runway that can take the landing impact of a fully loaded 747 onto to structure atop a manmade embankment and supported by concrete beams and walls.
• The runway and a taxiway next to it are being constructed at the same time as an $800 million terminal renovation.

From the article:

In all, the structures will use 2,661 24-in. concrete piles, 69,859 cu yd of cast-in-place concrete and 857 pre-stressed I-beams. The cast-in-place walls for the runway structure will be 3 ft thick and continuous. ...