Tunnel & Track Chart

With the confirmation of the civil contractors from the announcement yesterday, the tunnel chart has been updated. Alongside with the announcement of the trackwork contractor, we reveal the schematic track diagram.

Tunnelling works for the Thomson Line is scheduled to commence around mid 2015. Several announcements regarding the procurement of the 30+ TBMs varying between EPB and slurry types can be expected from the manufactures in the coming months.

Abbreviation breakdown:

SBAB - Sembawang Airbase

5XO - TS05 Crossover

ULS - Upper Thomson Launch Shaft

GBME - Gardens By the Bay - Marina East

Tunnel Chart for Stage 1 and 2

Tunnel Chart for Stage 3

Schemaic track diagram subdivided into the 4 civil teams

Final Contract Awards

Today, LTA released the finalized contract awards for the last 3 stations on the Thomson Line. With this, all civil works contracts have been closed and awarded, along with the contract for trackworks, T250.

The contract for T219 which is for the construction of Orchard station and associated tunnels has been awarded to a joint venture between Penta-Ocean Construction and Bachy Solentanche. Both companies have been involved in the construction of Singapore's MRT network. Penta-Ocean is currently working on Bendemeer station along Downtown Line Stage 3 (DTL3) while Bachy Solentanche was involved in the construction of Telok Ayer and Bugis stations on Downtown Line Stage 1 (DTL1). Worth noting is that Penta-Ocean has been the only contractor to bag a contract in each stage of the Thomson Line (TSL).

A view of the exit along Orchard Boulevard

Concourse level view of Orchard interchange station

Entrance along Paterson Road view

Contract T227 is for the construction of Marina South station and associated tunnels. This contract was awarded to a joint venture between Sinohydro Corporation and Sembcorp Design and Construction. As with Napier station, this is Sinohydro's first foray into the Singapore MRT construction market.

Concourse level view of Marina South station

A platform view of Marina South station

Looking down a new road at Entrances A and B

The final contract, T228, is for the construction of Gardens By The Bay station (current terminus of the TSL) and associated tunnels (including tunnels across the Marina Channel, ending in Gardens by the Bay - Bay East). This has been awarded to a joint venture of Nishimatsu Construction and Bachy Solentanche. Nishimatsu Construction is currently involved in the construction of mainline tunnels between Kaki Bukit and Ubi stations on the DTL3 as well as reception tunnels from the Tai Seng Facility Building to Ubi and Bedok North stations.

Concourse level at Entrance C

Entrance C

Contract T250 is for the trackworks along the entire TSL. This has been awarded to CTCI Corporation.

Dickenson Hill Road Closes

Dickenson Hill Road, a small lane connecting Kreta Ayer Heights to South Bridge Road, will close from this Sunday, July 27 till project completion in December 2020. Situated at the center of the T223 site, this closure is necessary for the construction of the Maxwell station. Outgoing traffic shall be diverted to Sago Lane during the construction phase.

Hock Lian Seng has taken over possession of the site at Maxwell, with hoardings erected, crawler crane and silos arriving on the site. Due to the tight space constraints, the platforms will be stacked here.

Aerial view of Maxwell station

Dickenson Hill Rd to close this Sunday

Marina Bay pre-construction

A few photos looking at the area before it gets torn up once again for the construction of the Thomson Line.

01 March 2014

17 April 2012 - Soil Investigations over the proposed station site

Final Tender Price Opening

July 11 saw LTA revealing the bid prices for the final TSL Contract T228. This is in anticipation of the awarding of the final 4 contract announcement of T219, T227, T228 and T250 towards end July/early August, for the construction of Orchard, Marina South, Gardens by the Bay stations and Trackworks for the Thomson Line.

T219 - Construction of Orchard Station and Tunnels for Thomson Line (July 10)
Bid Amount - S$490,009,000 | Samsung C&T Corporation
Bid Amount - S$497,800,000 | Penta-Ocean Construction - Bachy Soletanche JV
Bid Amount - S$575,229,164 | McConnell Dowell SEA Pte Ltd
Not Short Listed | Sacyr Construction - Essar Projects JV
Not Short Listed | China Railway Tunnel Group Co Ltd

T227 - Construction of Marina South Station and Tunnels for Thomson Line (June 19)

Bid Amount - S$488,000,000 | Sinohydro Corporation - Sembcorp D&C JV 

Bid Amount - S$509,880,000 | China State Construction Engineering    

Bid Amount - S$516,860,000 | Hock Lian Seng - Okumura Corporation JV 

Bid Amount - S$526,610,034 | Sembawang E&C      

Bid Amount - S$556,559,353 | Salini Impregilo S.P.A 

Bid Amount - S$569,387,000 | Samsung C&T Corporation  

Bid Amount - S$585,460,000 | Bachy Soletanche - Nishimatsu Construction JV

Bid Amount - S$632,060,205.22 | Cooperative Muratori & Cementisti (CMC)   

Not Short Listed | Tiong Seng Contractors      

T228 - Construction of Gardens By The Bay Station and Tunnels for Thomson Line (July 11)

Bid Amount - S$328,000,000 | Nishimatsu - Bachy Soletanche JV

Bid Amount - S$328,605,889 | Salini Impregilo S.P.A  

Bid Amount - S$345,024,675.93 | CMC - KTC Civil E&C JV

Bid Amount - S$388,662,000 | Woh Hup Pte Ltd - Hongrun JV      

Not Short Listed | China State Construction   

Not Short Listed | Daewoo E&C  
Not Short Listed | Tiong Seng Contractors - Dongah Geological JV

T250 - Trackwork for Thomson Line (June 11)
Bid Amount - S$200,000,000 | CTCI Corporation
Bid Amount - S$228,515,889 | Alstom
Bid Amount - S$245,574,450 | Mitsubishi
Bid Amount - S$315,920,175.18 | Colas Rail SA

Package C Renders

 A/E Consultancy services for package C of the Thomson Line were awarded to Aecom and SAA back in 2010. Effectively known as Civil Team 3 as construction works gear up, the design boundaries span from Whitley Road to Havelock. Stations included in this section are Stevens, Orchard Boulevard, Orchard, Great World and Havelock. Napier station is not included inside the design package as it is separately designed by the client.

Photos courtesy of SAA

Mount Pleasant Clears

Mount Pleasant is the northern most station along the third stage of the Thomson Line. Contract T215, which the station is under, has been awarded to RSEA-Eng Lee-Wai Fung JV. Twin bored tunnels to Caldecott will be built under this contract as well.

Situated at the old police academy, site clearing and demolishment of the vacated building is underway, with several compact to medium build excavators being delivered to the site. Mount Pleasant is the third Temporary Staging Area (TSA) site for trackworks.

Old Police Academy off the Pan Island Expressway

June 21 - Delivery of Hitachi Zaxis 200, a medium build excavator