Woodlands Extension , located under the station. Less than a year after the completion of the MRT project, the government announced in February 1991, intentions to extend the system to
Woodlands in the north of Singapore. Construction commenced in 1993, and the 16 km, 6 station elevated line was opened on 10 February 1996 at a total cost of
S$1.2 billion. With this kind extension, the
North–South Line included the three stations on the former
Choa Chu Kang Branch line (
Jurong East,
Bukit Batok,
Bukit Gombak and
Choa Chu Kang), forming a continuous line from
Jurong East to
Marina Bay. The construction of the extension was not without political fallout. For a long time, the politicians representing residences in the North-East area of the island had been calling for the construction of a planned
North East Line. The announcement of the Woodlands Extension led to protests especially from opposition members of parliament, in particular from
Chiam See Tong and
Low Thia Khiang, representatives of
Potong Pasir and
Hougang constituencies respectively, with both areas potentially benefiting from such a line. The opposition members accused the government of favouring the Woodlands Extension over the
North East Line due to opposition representation in the north-east area, arguing that there were far more residents in the north-east compared to the north, and questioned the rationale of building the Woodlands extension when the north was relatively undeveloped. Adjacent to the
Singapore Polytechnic on one side, and undeveloped land on the other, the building of the station was met with reservations by some members of the public over its low
catchment area. There were criticisms over the spending of "
taxpayers' money" chiefly for use only by students of one educational institution. The government proceeded with the construction anyway, citing the catchment area extends to public housing flats on either end of the polytechnic, and that the undeveloped land opposite is slated for extensive development, largely residential in nature. This station has indeed brought much convenience to the students at the polytechnic.
Changi Airport Extension For a long time following its opening in 1981,
Singapore Changi Airport relied on
taxis and buses as the primary means of public transportation to the rest of the country. They served the airport well, but concerns over competition from other regional airports, some of which feature quick rail-based services to their city centres, accelerated the government's plan to build a rail link to the airport. Provision had long been made for a new line branching off from the existing
East–West Line at the
Tanah Merah, with some conceptual plans showing a tentative route alignment to the airport along Airport Boulevard, continuing beyond the airport to Changi Point, before turning southwest back toward the city along the east coast of the island. The plans were finally announced by then
Deputy Prime Minister Lee Hsien Loong on 15 November 1996. However, the route alignment showed a deviation from previous plans. The final plan involved building only the first two stations, namely
Expo, an elevated station directly adjacent to the
Singapore Expo, and
Changi Airport, an underground station built between Terminal Two and the since constructed Terminal Three. The alignment of the station at the airport was switched perpendicularly to an east–west direction, such that stairs and escalators lead to two of the terminals directly from either end of the station. Construction began in December 1998.
Changi Airport was opened on 8 February 2002, giving the airport its first rail link after less than 21 years of operations. Initially through services were operated from the airport to Boon Lay at the other end of the East–West Line, however due to ridership falling below expectations the service was reverted to shuttle mode in 2003. Up to May 2005, the line was running at a deficit, although line operator SBS Transit managed a yearly overall profit as profits from its public bus service exceeded the losses from its operation of the North East Line. Running from
HarbourFront where Singapore's former World Trade Centre building lies to
Punggol to the northeast of the island, this line allowed for previously isolated or distanced areas to be linked up with the rest of Singapore by rail.
Buangkok opened on 15 January 2006 and
Woodleigh opened on 20 June 2011. 27 December 2015 and 21 October 2017 respectively. When fully completed, the line will be about long with 36 stations and serve about half a million commuters daily, making it the longest underground and driverless MRT line in
Singapore. Travelling from one end to the other will take about 65 minutes. On 15 August 2014, the Downtown Line 3 Extension was announced, in conjunction with the announcement of the
Thomson–East Coast Line. Two additional stations,
Xilin MRT station and
Sungei Bedok MRT station will be added to the Downtown Line, with Sungei Bedok as an interchange station with the Thomson–East Coast Line. It will add an additional 2.2 km to the line with the extension.
Thomson–East Coast Line on the Thomson–East Coast Line. On 31 January 2020, Stage 1 of the
Thomson–East Coast Line between
Woodlands North and
Woodlands South stations commenced operations. On 28 August 2021, Stage 2 of the line between
Woodlands South and
Caldecott stations commenced operations. On 13 November 2022, Stage 3 of the line between
Caldecott and
Gardens by the Bay commenced operations. By June 2024, train services extended to
Bayshore. On 23 June 2024, Stage 4 of the line between
Tanjong Rhu and
Bayshore commenced operations.
Existing line extensions On 28 February 2009, the 3.8 kilometre Boon Lay Extension to the East–West Line comprising 2 stations
Pioneer and
Joo Koon commenced passenger service. Construction had begun in December 2004 after the development of Pioneer New Town had been completed. Similarly, construction began for the
Marina South Pier in December 2009 and completed in September 2014, it began operations on 23 November 2014. The 7.5 kilometre Tuas West Extension (TWE) –
Gul Circle,
Tuas Crescent,
Tuas West Road and
Tuas Link – opened for passenger service on 18 June 2017. A extension to
Punggol Coast on the
North East Line opened on 10 December 2024. ==History of the system map==