Monday, 21 April 2014

Contract Awards - T215, T216 & T223

Contracts T215, T216 and T223 were awarded today. T215 is for the construction of Mount Pleasant station and associated tunnels. This contract has gone to RSEA - Eng Lee - Wai Fong Construction Joint Venture.



T216 will see the construction of Stevens interchange station and associated tunnels. This station will allow commuters to transfer between the Downtown Line and Thomson Line. This contract has been awarded to Daewoo Engineering.




T223 is for the construction of Maxwell station only. This stacked station will be built by home-grown company, Hock Lian Seng (HLS). Previously, HLS has completed the Marina Bay Circle Line station and are currently finishing the Downtown Line Gali Batu Depot.



Photo credits - LTA

Tuesday, 15 April 2014

Tendering Concludes

Tendering for Contract T228 closed today, ending the 18 month-long bidding process for the TSL's 25 main civil contracts which began in late 2012. A list of contractors that have bid and are successfully qualified will be released in an attached spreadsheet. 15 contracts have been awarded so far with a total sum of S$4.46b.

Tender Award Process
Within the next 5-8 weeks, the authorities would assess the bids and quality of the various contractors before revealing the bid amount to the public. The successful contractor would have more or less been decided by then. It will take another 3-6 weeks before LTA publicly awards the contract.


Here's a list of the contracts that have been awarded:

July 2013
T206 - Construction of Tunnels between Woodlands Station and Woodlands Avenue 12 including Crossover Tunnels and Reception Tunnels to Mandai Depot for Thomson Line
Shanghai Tunnel Engineering Co | Awarded Amount - S$421,588,626 
T213 - Construction of Caldecott Station and Tunnels for Thomson Line
Samsung C&T Corporation | Awarded Amount - S$284,797,000 


August 2013
T205 - Construction of Woodlands South Station for Thomson Line
Woh Hup | Awarded Amount - S$143,763,700 


October 2013
T201 - Construction of Mandai Depot
Jurong Primewide | Awarded Amount - S$329,403,686
T203 - Construction of Woodlands Station and Cut and Cover Tunnels for Thomson Line
GS Engineering & Construction Corp | Awarded Amount - S$292,200,000
T209 - Design And Construction Of Lentor Station And Construction Of Tunnels For Thomson Line
China Railway No.5 Engineering Group Co | Awarded Amount - S$247,176,282.89
T210 - Design and Construction of Mayflower Station for Thomson Line
Gammon Construction Limited Singapore Branch | Awarded Amount - S$174,348,000


November 2013
T202 - Construction of Woodlands North Station and Tunnels for Thomson Line
Penta-Ocean Construction Co Ltd | Awarded Amount - S$337,000,000
T208 - Construction of Springleaf Station and Tunnels for Thomson Line
Leighton Contractors (Asia) Limited (Singapore Branch) - John Holland Joint Venture | Awarded Amount - S$383,330,533
T212 - Construction Of Upper Thomson Station and Tunnels For Thomson Line
Sato Kogyo (S) | Awarded Amount - S$373,958,250
T217 - Construction Of Napier Station and Tunnels For Thomson Line
Sinohydro Corporation Ltd. (Singapore Branch) | Awarded Amount - S$188,800,000


January 2014
T207 - Construction of Tunnels from Crossover Tunnels to Springleaf Station for Thomson Line
Shimizu Corporation | Awarded Amount - S$189,785,000


February 2014
T211 - Design and Construction of Sin Ming Station and Construction of Tunnels for Thomson Line
Penta-Ocean Construction Co Ltd | Awarded Amount - S$454,420,000
T221 - Construction of Springleaf Station and Tunnels for Thomson Line
Gammon Construction Limited Singapore Branch | Awarded Amount - S$210,348,000
T226 - Construction Of Marina Bay Station and Tunnels for Thomson Line
Taisei Corporation | Awarded Amount - S$424,880,000


And here's a list of the contracts with the estimated month of award:

April 2014
T215 - Construction of Mount Pleasant Station and Tunnels for Thomson Line
T216 - Construction of Stevens Station and Tunnels for Thomson Line
T223 - Construction Of Maxwell Station for Thomson Line


May/June 2014
T218 - Construction of Orchard Boulevard Station for Thomson Line
T220 - Construction of Great World Station and Tunnels for Thomson Line
T222 - Construction of Outram Park Station and Tunnels for Thomson Line
T225 - Construction of Shenton Way Station and Tunnels for Thomson Line


July 2014
T219 - Construction of Orchard Station and Tunnels for Thomson Line
T227 - Construction of Marina South Station and Tunnels for Thomson Line
T228 - Construction Of Gardens By The Bay Station and Tunnels for Thomson Line

Wednesday, 9 April 2014

Napier - Final Preparations

We go aerial at the NPR site today. Contract T217 oversees the construction of Napier station and the adjacent tunnels to Orchard Boulevard. The site has already seen repetitive sewer diversions around the junction of Napier/Cluny Road as mentioned in the previous update. The area south of the station where the launch shaft is to be located has been cleared as well. The site office is located at the western end of the site.

Contract T217
Napier station will be stacked and designed in-house by LTA, featuring 3 levels - Subway/Concourse/Upper Platform (B1), Mezzanine (B2) and Lower Platform (B3, RL82.55). The station has been designed with knock out panels for a future underground infrastructure to cut through the mezzanine level. 2 barrier-free entrances will be built on either sides of Napier Road.

Excavation of this station will be vastly relied on dynamite blasting. Due to the sensitivity of the area, noise barriers as high as 12m will be constructed around Gleneagles and MFA around the station site. The POB at Gleneagles will be demolished.

A launch shaft will be built south of the station to facilitate 2 launches by a single TBM. The TBM will be slurry-type. The lower northbound tunnel will be bored first. Upon completion of the upper tunnel, all TBM accessories will be retrieved while the shield is abandoned in situ. The upper tunnel will then be bored with a new shield.

A cross passage will be located along Sherwood road, behind the PRC's Embassy. Due to the semi stacked configuration of the tunnels, this CP will be constructed by excavation from the surface to a depth of 42m and an audit will be mined to link both levels of tunnels. The excavation site will be eventually capped and backfilled hence does not serve as an escape shaft.

Site overview of the station box (Looking SE)
Final power grid diversions along Holland Road (looking SW)

Thursday, 3 April 2014

Springleaf - Start is here

Contract T208 is for the construction of Springleaf station and tunnels to Lentor station. Site clearing has commenced at the station location and the site office is mostly completed.