The construction works of the massive underground expansion of Admiralty Station (ADM) Extension beneath the operating station and railway lines involved controlled blasting, excavation, and construction of support structures underneath existing railway tunnels located beneath the heart of Hong Kong CBD.
In addition, the works also included maintaining nearby major roads and building structures, and managing ground-borne vibrations arising from construction. The project was successfully completed with normal railway operations maintained every day. Trains continued to use Admiralty Station throughout the project with passengers boarding and alighting on their journeys without noticing the massive scale of the works taking place underground.
34 new escalators are provided in the new extension connecting multi-level platforms and concourse. A unique and spacious atrium, over 30m tall, becomes a signature feature of the station which provides a space for vertical transportation. To draw natural light into the atrium and provide passengers with a comfortable travelling experience, a stunning skylight is designed next to the new exit at street level. This new exit connects to the footbridge network which brings passengers to nearby buildings like the Central Government Office.
Making use of the spacious new atrium space, a colourful suspended artwork “Mapping Our Way” represents the four railway lines converging at the station to enrich the travel experience for the passenger.
Upon its extension across the harbour, the 46km East Rail Line (EAL) consists of 16 stations including the new terminus ADM, which is the only mega interchange station in the MTR network with four-line interchanging. EAL passengers arriving at this station can change to other lines easily without exiting the paid area; travelling time will be significantly reduced.
With the new train fleet and signalling system, the journey between Sheung Shui and ADM with direct access will take only about 40 minutes. Passengers can save about 15 minutes for the same journey than now which requires interchanges. This does not only provide passengers with faster train journeys, but also enhances the efficiency of the train service arrangement.