The US$310m (£204m) contract is for Parsons to construct a 2,000-ft track extension to reach the consolidated rental car facility (CRCF) and for design and replacement work on the existing ATS system.
The contract is part of the US$782m CRCF project, which will consolidate all of the rental car companies into one facility, as well as offer new public parking for airport passengers.
Under the contract, the ATS maintenance and storage facility will also be expanded, and the existing 15-vehicle ATS fleet will be replaced with 36 new rail cars that feature automated vehicle control, traction power and communications improvements.
Parsons will manage construction of the project and provide design for the traction power, communications, and track work while performing systems integration and commissioning work for the entire project. The supplier of the ATS vehicles and the train control system is Bombardier.