Totaling only one-quarter mile in length, the $172-million AirTrain extension significantly enhanced connectivity at San Francisco International Airport. Carried out over 40 months using progressive design-build delivery, the project extended the existing electric people-mover system to the airport’s long-term parking garage, surface parking lots and ground transportation staging areas. In addition, new stations were provided at the garage and at the newly constructed Grand Hyatt hotel. The result is easier access for travelers, less roadway congestion and more clean-energy transportation around the airport. Incorporating the garage into the AirTrain network, for example, replaces a shuttle bus connection that generated 600,000 miles of trips annually.