The $1 billion expansion is the first major construction overhaul since the main terminal opened in 1981. There are 450 contracting and subcontracting firms currently working on the airport's multiple projects.
The project will expand the airport's capacity to up to $40 million passengers.
Some of the project enhancement include a $211 million train depot and parking garage, and other improvements, totaling $118 million. Mitsubishi will design the three new Automated People Mover (APM) trains to airsides 1 & 3, will cost $311 million.
The Orlando airport, Florida's second busiest airport, is using a mix of state and federal grants, spending reserves of $56 million to fund the project slated to be completed in 2018.