Singapore Changi International Airport has been developed in line with a far-sighted but also evolving master plan by CPG that has guided it to world-benchmark status since the early 1970's. Phase 1 saw land reclamation, Runway 1 and associated road, utilities and facilities, and the centrepiece Terminal 1. Phase 2 saw a second runway, a taxiway bridge, the even larger Terminal 2 and ultimately its expansion. The addition of two new finger piers to Terminal 1 saw the air hub move into Phase 3, culminating with the development of Terminal 3 and its auxiliary facilities and linking taxiways, as well as the Budget Terminal, to give the airport capacity of 72 million passengers per annum.
Airport Engineering Services supported the airfield developments for each Master Plan phase. Subsequent to the initial phase, these were also for the most part planned and carried out within airport aircraft operational areas, and implemented in multiple phases to minimize aircraft and airport ground operations disruption. Each new development for runway, taxiway or aircraft apron - or all of these together - also involved a comprehensive range of services generally included, such as soil improvement, services diversion, drainage upgrading, aircraft rigid pavement design, guidance signs, airfield lighting and its control system, together with blast deflectors and fuel pipe protection.