Tagore Trackworks

CTCI has taken full possession of the staging ground from T208 since the beginning of the year. 2 gantry cranes have been assembled at the site, with track-laying equipment being brought in ahead of the commencement of trackworks towards Lentor Station.

T250 site mobilization activity at Tagore

Facility Building Fit-Out (II)

Architectural and M&E works continue at the facility building and escape shaft. Trackworks are proceeding towards Springleaf Station from the facility building.

RTS Facility Building

Launch Shafts Backfill

The Mandai Depot is nearing completion with the final structural steel works completed. Fit-out and trackworks continue, with the commencement of landscaping, fencing and driveway works since the beginning of the year. The delivery of the first passenger train to the depot is scheduled in June.

Backfilling works for LS2 and the Sembawang Airbase C&C tunnel site, as well as casting of the escape shaft 1 structure have completed to ground level. Demobilization of the T206 sites are underway.

Mandai Depot

Woodlands South - Basic Structure Completion

The station achieved full basic structural completion with final portion of roof slab cast at the beginning of the year. The remaining concourse and roof slabs have also been constructed at the temporary access pits. RC structural works for entrance B & D have completed, and trackworks have also progressed through the station from SBAB.

Installation of steel lift frame and backfilling of earth around entrance A

Tagore - SWC Handover

The system wide contract (SWC) works have started with the partial site handover from T208. Backfilling works are in progress across the remaining 57m portion around the north launch shaft, together with the RC works for the Changi bound trackway portal structure.

Tagore Site handed over to SWCs between GL5-16

Mainline Trackworks

Trackworks at the depot have been ongoing for over a year now, with majority of the works mostly completed across the depot. CTCI has begun taking over access along the completed portions of tunnel between T206-T208, with trackworks commencing along the reception tunnels 1&2 towards Sembawang Airbase. The permanent tunnel structure within the launch shafts are being constructed over as a conclusion to the civil works.

Mandai Depot

Sembawang Airbase Backfill

Backfilling works are underway at SBAB upon completion of the tunnel roof structure. As the installation of the SWC brackets in the tunnels complete by the next quarter, the interlinking tunnel structure within each launch shaft will be cast to provide a complete substructure tunnel linkage across TEL1 for trackworks to proceed on to the reception tracks and mainline from Mandai Depot.

S1-S2 removal with concurrent backfilling works at Sembawang Airbase C&C

TEL1 Tunnelling Completes

Bored tunnelling works have completed this month under Stage 1 of the project between Woodlands North, Mandai Depot and the Sembawang Airbase cut and cover tunnel site. 12 tunnel drives were launched using 3 Earth Pressure Balance machine 4 Slurry TBMs which bore through the weathered Bukit Timah Granite to complete the 8km network of mainline and reception tunnels beneath Woodlands.

For most of the tunnels, the basic structural completion (BSC) have already been achieved with the first stage concreting (FSC) for the track bed, together with brackets installation for the various SWC. Trackworks are slated to commence through the tunnels by the end of 2017, with the remaining SWCs gaining access from the 2nd half of 2018.

Mandai Depot Stabling Yard

Mandai Depot - TBM 3 Second Breakthrough

Tunnelling works for the T206 project are wrapping up with 8 of the 10 bored tunnels completed. Cross passage excavation and the first stage concreting works are taking place within the tunnels. Structural, fittings and trackworks are progressing at the depot.

Stabling Yard nearing structural completion

Mandai Depot - Trackwork Begins

Commencement of the line's largest system-wide contract, led by CTCI for the design, supply, construction, testing and commissioning of trackwork and third rail system, took place this quarter with the staging ground prepared at the Mandai Depot. This is the second back-to-back trackwork project awarded to the Taiwanese contractor, with a smooth transition of resources expected from the recently completed Downtown Line 3.

Structure for the stabling yard, bus parking deck and perimeter wall mostly completed

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.