Kiewit Corporation has withdrawn from the tender process, which was on the RFP stage, for the construction of a new AirTrain at Newark Liberty International Airport, USA. 

The decision is following a dispute with the airport's owner, the Port Authority of New York and New Jersey. The company led one of four shortlisted bidding teams, Liberty Mobility Express, which also includes Tully Construction, AECOM USA, and Alstom Bombardier Transportation (Holdings) USA.  

The AirTrain Newark PPP project has an estimated investment of US$2.05 billion. The project includes the replacement of the current train system with the new one with the expected operation rate of 2,000-3,500 passengers per hour per direction. It will be a 2.5 miles elevated guideway train system.