The extension will run on viaduct for its entire length with two stations, one for terminals 1 and 2 and the other for terminals 3 and 4. Fast was awarded a contract in July 2013 to build and equip lines 4, 5 and 6, which have a total length of 64.5km with 29 stations, 30km of viaduct and two depots. FCC’s partners in Fast include Alstom, Atkins, Freyssinet Saudi Arabia, Samsung C&T, Setec, Strukton and Typsa.