in 1990, the government proposed to build the north south line woodlands extension to extend the existing north-south and east-west lines. the extension connects choa chu kang with yishun. construction started in 1991 and the station was opened on 10 february 1996 along with the other five stations on the woodlands extension. television screens were installed at admiralty station, along with woodlands, marsiling and yew tee stations.