Downtown MRT Line
Downtown MRT Line
The Downtown Line is coloured blue on system maps.
|System||Mass Rapid Transit (Singapore)|
|Status||Operational as of 22 December 2013(stage 1),
under construction (stage 2 & 3)
|Owner||Land Transport Authority|
|Operator(s)||SBS Transit DTL|
|Rolling stock||Bombardier MOVIA C951|
|Line length||42 km (26 mi)|
|Track gauge||1,435 mm (4 ft 8 1⁄2 in) standard gauge|
The Downtown Line (DTL) will be the fifth Mass Rapid Transit line in Singapore. It is due to be opened in three stages, on 22 December 2013, 2016 and 2017 respectively. When fully complete, the line will be about 42 km (26 mi) long with 34 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. The line is coloured blue in the rail map.
The line will connect the North-Western and Central-Eastern regions to the new downtown of Singapore. Transfers to this line from the North East Line will be available at Chinatown and Little India, the North South Line at Newton, the East West Line at Bugis, Tampines and Expo, the Circle Line at MacPherson, Bayfront, Promenade and Botanic Gardens and Bukit Panjang LRT at Bukit Panjang. This line will be the third in Singapore to be entirely underground (apart from the Gali Batu Depot). Once fully completed, this line will also be the longest automated rapid transit line, surpassing the record set by the Circle Line.
On 14 June 2005, the Land Transport Authority (LTA) announced that it would construct the (then known as) Downtown Extension of the Circle Line, to serve the Downtown at Marina Bay (DTMB) area, where an integrated resort (Marina Bay Sands) and Singapore's second botanical garden (Gardens by the Bay) will be located. The 3.4-kilometre fully underground line was estimated to cost S$1.4 billion. Construction of the extension was slated to begin in 2007. Bayfront and Marina Bay stations effectively opened on 14 January 2012.
On 27 April 2007, it was announced that Stage 1 of the line will connect Promenade with Bugis. As such, the former Downtown Extension of the Circle Line became known as the Downtown Line Stage 1, a 4.3 km 6 station segment running fully underground from Chinatown on the North East Line to Bugis on the East West Line, due to be operational in 2013, a year later than originally planned. Three new stations will be constructed underground, linking Bugis on the East West Line, Promenade on the Circle Line and Chinatown on the North East Line. Two stations, Bayfront and Downtown, will be built to serve the DTMB area. Another station, Telok Ayer, will be built along Cross Street near the Chinatown area. During this period of time, the line was designated brown.
In its preliminary plans, Stage 2 of the Downtown Line was called the Bukit Timah Line, supposedly a 20-kilometre line that would connect the new downtown with the Bukit Panjang, Upper Bukit Timah and the Bukit Timah corridor. It was to intersect the Circle Line and all other current lines along the way. It was expected to alleviate the heavy traffic along Bukit Timah, Dunearn Road and Upper Bukit Timah after completion. Provisions were made at Promenade which would have been the line's southern interchange with the Circle Line. Stage 2 of the Downtown Line will be 16.6 km long, consisting twelve stations, including three interchange stations, and is scheduled to be completed by 2016. On 15 July 2008, the LTA announced the exact location, alignment and tentative name of the twelve stations to be built. Commencement of construction for Stage 2 began on 3 July 2009 with a groundbreaking ceremony at Beauty World Station.
In its preliminary plans, Stage 3 of the Downtown Line was part of the Eastern Region Line, a 40-kilometre rectangular loop that would have complemented the existing East West Line and enhance inter- and intra-town travelling in the eastern region. It would have looped around the Jalan Besar and East Coast areas, intersecting the Circle Line and other current lines along the way, benefiting residents in Tampines, Bedok, Marine Parade, MacPherson and Kaki Bukit. Stage 3 now only comprises the northern segment of the original plan, from Chinatown to Expo. Provisions were made at Chinatown, which would have been the line's western interchange with the North East Line and the Downtown Extension. The northern segment of the loop was to be constructed first, passing through Jalan Besar area and eastwards to parts of Bedok, Tampines and Expo Station to serve the Singapore University of Technology and Design (SUTD) next to Upper Changi and Singapore Expo which will move there when the new campus is completed in 2018. Being 21 km-long, the sixteen stations would have been completed by 2018. In 2008, the government decided to accelerate the sector's opening to 2016. Station locations and their working names for Stage 3 were officially announced on 20 August 2010. At the same time, the then Transport Minister, Mr Raymond Lim also announced a delay of the completion of Stage 3 by a year to 2017 to accommodate the construction of an additional station at Jalan Besar. Similar to Stage 2, preliminary work by the LTA had begun. The finalised names for the Stage 3 stations were announced on 19 August 2011.
The 30 October 2012 edition of The Straits Times reported that the final costs of building the line may reach an estimated S$20.7 billion, up more than 70% from an initial estimation of S$12 billion.
On 24 June 2013, LTA announced that work has stopped on the King Albert Park, Sixth Avenue and Tan Kah Kee stations, after Alpine Bau GmbH, the previous main contractor, filed for insolvency on June 19 and it will take some three to six months for new contractors to resume work on three stations on the upcoming Downtown Line Stage 2 (DTL2).
On 29 August 2013, LTA announced that it has appointed McConnell Dowell South East Asia (SEA) Private Limited and SK E&C (Singapore) to complete the work on the three stations. As a result of the delay, the completion of Downtown Line Stage 2 has been pushed back from December 2015 to the middle of 2016.
On 7 October 2013, Transport Minister Lui Tuck Yew announced at the opening ceremony of the inaugural Singapore International Transport Congress and Exhibition, that Downtown Line Stage 1 will open on 22 December 2013.
Marina Boulevard sinkhole incident
Marina Boulevard had to be temporarily closed and traffic was diverted on the morning of June 18, 2008 after soil on a construction site next to the road sank. Urban Redevelopment Authority said the hole measured 5 metres wide and was 2.5 metres deep. It sank at about 9:10 am. This caused a hole next to the Marina Boulevard slip road leading towards East Coast Parkway. URA said the soil subsidence is located within the construction site where construction works for the common services tunnel is being carried out. No one was injured. About 25m of the rightmost two lanes on Bukit Timah Road has been closed off to traffic after a nearby drain embankment caved in on 17 January 2012 in the course of tunnelling works for the Downtown Line. LTA said that its engineers found a 14m precast segment of the Bukit Timah canal wall near the junction of Bukit Timah Road and Clementi Road dislodged, and some gaps in the ground were formed around that segment of the canal. It then stopped its tunnelling works to ensure safety and has begun to inject cement to stabilise the ground.
Evans Road casualty incident
On 11 March 2012, a worker was killed at a site between the Botanic Gardens and Stevens station after a concrete slab fell on him. 35-year-old Masud Al Mamun was operating an excavator deep in the ground when the slab fell on him. Rescuers had to use a breaking tool kit to break a portion of the concrete slab. It took nearly five hours to reach the man lying motionless on the ground. This is the first casualty case in the construction of the Downtown Line.
Bugis casualty incident
On 18 July 2012, two Chinese workers died after a temporary scaffolding, about four metres high, used for the construction of the new Downtown Line Bugis station subway link roof slab gave way. The incident happened at about 6:50 am. The eight other injured workers who were working on top of the structure, were sent to the nearby Raffles Hospital before rescuers arrived. They had minor injuries and five of them have since been discharged. Of the remaining three workers who were warded, one suffered from abdominal and chest injuries, while another suffered a back injury and the last had a finger injury. Seven of the injured are from Bangladesh while the eighth is from China. The Ministry of Manpower(MOM) has ordered all construction work to stop, while the Building and Construction Authority (BCA) has revoked the construction permit for the site while investigations are underway. MOM said that based on preliminary information gathered, workers were pouring concrete, also known as the casting process, into the formwork when the structure supporting the formwork collapsed. The formwork, located between the new and old sections of the station, was part of the structure being built to form the underground linkway, which is about three to four metres deep. The area affected is localised, measuring about five metres by 10 metres and the entire station is about 7,500 square metres. The Land Transport Authority said the station structure is substantially complete and structurally sound, and that the incident posed no risk to surrounding developments and the public.
On 22 August 2013, the main and sub-contractor Soletanche Bachy and Koh Brothers at the construction site were charged in court over the collapse. The two companies were said to have failed to take measures to ensure that the workplace was safe and without risks to health to every person within the premises on 18 July 2012.
Woodlands Road sinkhole incident
Excavation works for the Downtown Line 2 caused a massive sinkhole on Woodlands Road on 16 March 2013. The construction destabilised the soil, which ruptured an underground water pipe. The rupture which was as wide as one of the road's lanes, appeared near West View Primary School, next to where construction work for Downtown Line 2 is being carried out.
Here are the following station locations for all three stages of the Downtown Line.
|Station Number||Station Name||Interchange/Notes|
|DT1 BP6||Bukit Panjang||Bukit Panjang LRT|
|DT4||(future station at Hume Avenue).|
|DT6||King Albert Park|
|DT8||Tan Kah Kee|
|DT9 CC19||Botanic Gardens||Circle Line
|DT10 TS11||Stevens||Thomson Line
|DT11 NS21||Newton||North South Line
|DT12 NE7||Little India||North East Line
|DT14 EW12||Bugis||East West Line
|DT15 CC4||Promenade||Circle Line
|DT16 CE1||Bayfront||Circle Line
|DT19 NE4||Chinatown||North East Line
|DT26 CC10||MacPherson||Circle Line
|DT32 EW2||Tampines||East West Line
|DT35 CG1||Expo||East West Line
- The Downtown Line's numbering scheme reserves station code "DT4" between Hillview (DT3) and Beauty World (DT5).
The rolling stock consists of Bombardier MOVIA C951 cars, running in three-car formation. They will be stabled at Gali Batu Depot when it opens with Stage 2 of Downtown Line by 2016. For the period between the operation of Downtown Line Stage 1 and Downtown Line Stage 2, trains will be stabled at a maintenance facility that has been built at Marina Bay as part of the Circle Line project. Kim Chuan Depot will house the Operations Control Centre (OCC) for Downtown Line until Gali Batu Depot is ready to be used.
On 12 October 2012, the first of 11 trains for the Downtown Line Stage 1 arrived at Jurong Port. It was transported to Kim Chuan Depot to undergo testing by LTA before it is handed over to SBS Transit.
As of 28 February 2013, Bombardier has delivered five of the 11 trains for Downtown Line Stage 1. LTA together with the operator, SBS Transit are currently conducting the necessary tests to ensure safety standards, functional performance and systems compatibility requirements are met before revenue service of the DTL1 starting on 22 December 2013.
The line will be equipped with a fully automatic communication-based train control (CBTC) system provided by Invensys Rail, using a high-capacity digital radio system for communication between trains and the centralised control system. A sophisticated fall-back signalling system (FBSS, relying on conventional track-circuit occupancy detection) is included to ensure fully automatic operation and train protection independent of the radio system. Initially, an integrated control centre based on Invensys RailSystematICS provides automatic train control. Following an internal business decision, Invensys Rail decided to ditch the SystematICS ATS solution in February 2011 to the benefit of its Rail9000 solution (supported by its Dimetronic division. Automatic platform screen doors (provided by Faiveley Transport) ensure a safe and comfortable environment for passengers, offering protection from arriving and departing trains.
- "Company Announcement – Incorporation of a Wholly-Owned Subsidiary".
- "Land Transport Masterplan: Downtown Line Stage 1 to open on Dec 22". The Straits Times. Retrieved 16 November 2013.
- "12 MRT stations for Bukit Timah by 2015", Luxuryasiahome, 16 July 2008
- "Govt approves S$12b MRT Downtown Line to be built by 2018".
- "Expanding The Rail Network With Downtown Extension", Land Transport Authority Press Release, 14 June 2005
- "Groundwork begins for new MRT lines", Christopher Tan, The Straits Times, 13 March 2006
- "LTA unveils locations of DTL stage 2 stations", Christopher Tan, The Straits Times, 15 July 2008
- "Work on MRT Downtown Line Phase 2 Starts", Tyler Thia, Channel NewsAsia, 3 July 2009
- Downtown Line 3 Station Locations Unveiled. Land Transport Authority, 20 August 2010
- Downtown Line 3 Station Names Announced
- "Downtown Line depot to be located off Woodlands Road", Margaret Perry, Channel NewsAsia, 26 February 2008
- LTA Appoints SBS Transit Limited to Operate Downtown Line under New Rail Financing Framework Land Transport Authority – 29 August 2011
- "Downtown Line costs soar by more than 70%", Christopher Tan, The Straits Times, 30 October 2012
- "TWO NEW RAIL LINES AND THREE NEW EXTENSIONS TO EXPAND RAIL NETWORK BY 2030". Land Transport Authority. January 17, 2013.
- "Work on three DTL2 stations delayed". Channel NewsAsia. June 24, 2013.
- "Stage 2 of Downtown Line to be ready in mid-2016 instead of Dec 2015". Channel NewsAsia. August 29, 2013.
- "Part of Bukit Timah canal found dislodged while tunnelling: LTA". Channel News Asia. Retrieved 2012-01-20.
- Lim, Paul (11 March 2012). "Bangladeshi worker killed after concrete slab falls on him". AsiaOne. Retrieved 18 April 2012.
- "Two dead, eight injured at MRT construction site". Channel NewsAsia. July 18, 2012.
- "Two bodies recovered from MRT work site". Channel NewsAsia. July 18, 2012.
- "MRT worksite accident: why scaffolding collapsed". Channel NewsAsia. July 18, 2012.
- "Two charged over Bugis Downtown Line's fatal worksite accident". The Straits Times. August 22, 2013.
- "Excavation works for new MRT line caused Woodlands sinkhole". The Straits Times. Retrieved 2013-04-16.
- LTA Awards 6 Downtown Line Contracts Totalling $1.13 Billion
- Contract 901QP: Terms of Reference, Land Transport Authority, 9 November 2007 (tender document from www.gebiz.gov.sg)
- "First Downtown Line train lands in Singapore". Land Transport Authority. Retrieved November 16, 2013.
- "Shorter Waiting Time With 15 More Trains For Downtown Line". Land Transport Authority. March 28, 2013. Retrieved March 28, 2013.
- Invensys Rail secures signalling contract for Singapore’s new Downtown Line
- "Invensys Rail secures signalling contract for Singapore’s new Downtown Line".
- CTC RAIL 9000