Gardens By The Bay - Tunnelling Completes

Tunnelling works for the T228 project have completed ahead of schedule, with the Hitachi Zosen EPBM breaking through the station d-wall from the return Changi bound tunnel drive earlier this month. RC works for the station's internal structure continues, with excavation works starting at entrance A. Preparations for the reinstatement of Marina Gardens Drive over the completed subway are in progress with implementation scheduled next quarter.

Gardens By The Bay station

Marina South Cast (IV)

RC works for the internal structure of the station continues up to the roof slab. The TBM has completed the Woodlands bound drive to Marina Bay and reassembly works for the Changi bound drive have begun with the dismantling of the backup gantries & assembly of the heavy lift crawler crane on site. The relaunch of the TBM is scheduled next quarter - the 2nd last to be facilitated along the TEL1-3.

Marina South station

Marina Bay Excavation (V)

Excavation works continue towards the formation level at the lower underplatform level. JGP works are taking place beneath the NSL and CCL tunnels, prior to the commencement of ground freezing and the subsequent SCL construction of the twin mainline stacked mined tunnels next quarter.

Marina Bay Station

Shenton Way Cast (IV)

Casting of the internal structure within the station is ongoing concurrent with the excavation and RC works at the unpaid linkway. Excavation works for TBM 1 has resumed with a further 100 rings advanced this quarter. In view of the lost time caused by the challenges at McCallum St, the project team is re-using TBM 2 to complete the Changi bound tunnel towards Maxwell. The TBM commenced mining works today, making it the 3rd last TBM relaunch along TEL1-3.

Shenton Way Station

Maxwell Excavation (II)

Excavation works are in progress beneath the completed concourse slab, down to the upper under-platform level.

Excavation works at Maxwell

Outram Park Cast (V)

Excavation works progresses along the linkways & casting works at the station.

Outram Park Station

Havelock Excavation (V)

Excavation works at the station have reached the formation level with the final S8 layer installed at the bottom of the station and RC works for the underplatform level will begin by the next quarter. RC works are in progress at entrances A & E.

Entrance E & D

Great World Cast (IV)

Reassembly of the 2 Herrenknecht machines took place this quarter, nearly a year after the initial 2 launches were carried out. EPBM S-945 commenced on its initial drive back to Orchard, while the mixshield has almost completed assembly works and would begin excavation works next month. RC works are in progress at the station and entrances, with pipe jacking works at the subway beneath Kim Seng Road set to commence next month.

Entrance B & subway link roof slab cast

Orchard Cast (V)

RC works are in progress at entrance B & bored pile works are in progress at entrance C.

Orchard Station

Orchard Boulevard Cast (IV)

RC works are in progress at the station's platform level.

Napier Excavation (IV)

Excavation works are nearly completed at the site. RC works have started at entrance A.

Napier Station

Stevens Diverts (IV)

The final and semi-permanent traffic diversion stage 5 has been implemented, which sees the worksite for the basement excavation and casting works situated in the center of both carriageway following the completion of the entire station roof slab. This layout is rarely preferred as it severely limits the working space and site movement of the construction activities, however necessary as the most optimal solution so as to not disrupt access from the residential apartments and side roads along both sides of the road.

Excavation works at the station to the concourse slab is in progress with the first section of the concourse slab cast. D-walling works are in progress at entrance B. The RTBM drive is almost completed and will reach the escalator shaft wall within the next few days.

Stevens station with TD5 implemented

Mount Pleasant Cast (IV)

RC works progresses at the station's concourse level. Structure around entrance B has surfaced to the basement roof level with formwork installation ongoing in preparation for the first roof slab cast.

Mount Pleasant Station

Caldecott Cast (VI)

The final concrete pour for the RC roof slab has taken place and the station is on track to achieve structural completion by the beginning of next year. Destrutting of the S1 and removal of king posts are taking place. Backfilling works are in progress at the cut and cover tunnel.

Caldecott Station

Upper Thomson Cast (II)

Excavation of the station has reached the formation level and casting of the underplatform/platform level are in progress. Excavation and RC works are simultaneously taking place across the entrances. TBM 1 has completed the second drive to Upper Thomson Station last month and dismantling works are in progress.

Completed concourse slab towards entrance D. Internal RC wall works for south TVF/VS/VE in progress.

Bright Hill Cast (II)

Excavation works have completed at the station, with casting works ongoing for the internal structure & entrances.

Bright Hill site

Mayflower - Basic Structure Completion

The Mayflower Station has achieved the Basic Structure Completion (BSC) earlier this quarter, making it the first station along the entire line to do so. The T210 team accomplished this around 3 months ahead of schedule, an extremely remarkable feat in the MRT construction where most projects struggle to even meet the dateline.

Filling and reinstatement works are progressing over the roof slab as the RC works for the entrance and service superstructure takes place. Numerous road realignments will begin to take place around the site for the phased removal of the temporary steel road decking as part of the permanent works.

Several site visits have been facilitated for the various stakeholders surrounding the station following the milestone (Photo: SNGS Primary)

Lentor - Tunnelling Completes

Bored tunnelling works for TBM 1 completed earlier this week, concluding the 18 months long Changi bound tunnel drive from Lentor to Mayflower station through the 5XO site. Its sister TBM 2 is 91% out of the 970-ring drive and targeted to complete by the end of the month. The tunnel roof structure of the 5XO is completed and backfilling works have commenced. Structural works for the station entrances are progressing on the surface level.

Lentor Station

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

Springleaf - Basic Structure Completion

Casting of the station's roof slab has almost entirely completed and waterproofing works are in progress. RC works for the roof-ground level structure at the entrances and ventilation shafts have also taken place. The team has taken back possession of the launch shaft from T207 with structural works of the tunnel in progress. Backfilling works will commence from the next quarter onwards, and the realignment of Upper Thomson Road will take place after the hacking of the d-wall panels.

Completed roof slab at Springleaf Station

Facility Building Fit-Out

Architectural and M&E works are taking place within the completed structure of the RTS facility building. The completed 2 tunnels from SBAB have been handed over to T250, while FSC works are underway along the 2 tunnels from Springleaf. The launch shaft at Springleaf has also been handed back to T208 for the structural & subsequent backfilling works.

RTS Facility Building

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

Woodlands South Cast (III)

Casting works for the station are now progressing along the internal RC partition and skinwall at the platform and concourse levels up to the roof structure.

Removal of S1 strut & basement roof - ground structure emerging at entrance A

Woodlands Cast (V)

The first section of the roof slab has been cast and reinforcement works for the second zone has almost been completed in preparations of the second pour. Casting works are ongoing at the entrances and crossover tunnel. 2 steel beam launching works for the NSL paid linkway was carried out over the last 2 months.

T203 Woodlands Station with roof slab completed around GL14-18

Woodlands North - Basic Structure Completion

The Woodlands North station is on track to achieve the Basic Structure Completion (BSC) by year end as scheduled, a milestone concluding the main civil & structural reinforced concrete works. The BSC also governs the necessary waterproofing, temporary lighting, drainage and general housekeeping to be in place for the safety of the system wide contractors (SWCs) to commence the architectural and M&E works.

Structural works are in progress for the 2 entrances as well as the north crossover tunnel. Backfilling works progress across the south crossover tunnel and launch shaft area. A second stage of earthworks have commenced by the authorities east to the T202 site in preparation of business, industrial and commercial developments around the station, including the upcoming JBRTS complex.

Completed structure of the Woodlands North station