LTA Update (Q3 2021)

T215 - Mount Pleasant Entrance 1

LTA Update (Q2 2021)

T215 - Mount Pleasant Station mezzanine level

LTA Update (Q1 2021)

T213 - Caldecott Entrance 2

LTA Update (Q4 2020)

T208 - Springleaf entrance C pick up drop off bay, taxi stand, linkway and bicycle park

LTA Update (Q3 2020)

T213 - Overview of Caldecott

LTA Update (Q1 2020)

T208 - Springleaf Entrance C

LTA Update (Q4 2019)

T208 - Springleaf Concourse level

LTA Update (Q3 2019)

T202 - Woodlands North Entrance D

LTA Update (Q2 2019)

T202 - Woodlands North Station

LTA Update (Q1 2019)

T201 - Rail Admin Building at Mandai Depot

Stevens - Excavation Completes

Excavation works for the station box are largely completed down to the paid linkway level, with the dismantling of the temporary earth retaining structural system commencing concurrently. Architectural works for certain portions of the concourse level have started ahead of the overall station BSC due to the delay in the project timeline.

The opening of TEL3 is currently being dragged by the progress of the station, which at present estimate is likely to be delayed by up to 6 months.

TEL3 Tunnel Progress, March 2019. The final TBM 4 is projected to breakthrough at Napier by the middle of Q2.

Stevens Station

LTA Update (Q4 2018)

T201 - Driveway within Mandai Bus Depot

LTA Update (Q3 2018)

T201 - Train in main workshop

Stevens - TBM 2 Completes

Excavation works for the Woodlands bound tunnel from Mount Pleasant to Stevens completed today with the docking of TBM 2 outside the d-wall of the station. The NFM slurry machine was launched in September 2016, having spent the last 2 years completing the 1.44km tunnel drive. The final month of tunnelling works proceeded cautiously between the stacked DTL tunnels, as well as beneath the Wayang Satu Flyover and Bukit Timah Canal.

Its sister machine is approximately 100m behind and is similarly scheduled to dock at the station next month.

TEL3 Tunnel Chart - September 2018

Docking of TBM 2 (left) at the D-wall of Stevens Station (Photo: Oop Pocca)

LTA Update (Q2 2018)

T205 Woodlands South Station. Escalators installed between the paid concourse down to the platform level.

Outram Park - Tunnelling Completes

Tunnelling works for the T222 project have completed following the breakthrough of the third drive (TBM 1 refurbished) along the Woodlands Bound tunnel on Apr 27 and the fourth drive (TBM 2 refurbished) along the Changi Bound tunnel on Jun 21 between Outram Park and Havelock Station (800m).

This is the final tunnel to be completed under the C4 team, and the second final project along the overall line to complete bored tunnel excavation works.

Breakthrough of the NFM EPBM at Havelock Station, Woodlands Bound (April 27, Photo: Ram)

Shenton Way - Tunnelling Completes

Bored tunnel works for the T225 project completed in the early hours of today with the docking of TBM 2 at Maxwell station. Tunnelling works were unique in this project due to the stacked configuration of the 2 launch shafts, one of which is within the permanent structure of the station. Geological constraints were also experienced beneath McCallum St resulting in prolonged delays and the eventual re-sequencing of the TBM drives.

T225 is the 3rd last team to complete tunnelling works for the line, ahead of T222 later this month and subsequently T216 in Q4.

Upper/Changi Bound tunnel towards Maxwell completed by TBM 2

Final TBM Assembly

Assembly works for the final TBM for the Thomson Line (C1-C4) are in progress at the Dalvey Launch Shaft for the 300m Woodlands bound tunnel towards Stevens Station. The said TBM is a refurbished STEC Earth Pressure Balance machine previously used on the line which had been additionally procured by the project team in an effort to achieve the crucial basic structural completion for TEL3 by the end of the year. The 5th machine supersedes the intended second drive of the NFM TBM 3, which is currently still excavating the Woodlands Bound tunnel towards Napier.

The choice of using an EPBM as opposed to the existing Slurry TBMs is likely due to the constraints for the Slurry Treatment Plant, which was designed to only accommodate concurrent tunnelling works for TBM 3 and 4. Favorable geological data obtained from the previous excavation of the parallel Changi bound tunnel likely bolstered the decision of using an EPB shield.

The TBM was lowered down in the second week of May and is scheduled to commence mining next month.

Internal assembly of TBM 5 being executed at Dalvey LS

TEL3 Tunnel Progress, June 2018

LTA Update (Q1 2018)

T201 - Structural Steel roof works at Mandai Bus Depot

Marina South - Tunnelling Completes

Tunnelling works for the T227 project have completed, with the breakthrough of the Changi bound tunnel between Marina South and Marina Bay achieved today following the relaunch of the TBM in January. The average advancement rate for the second drive was significantly high at around 7 rings/day.

Breakthrough of CREG TBM at Marina Bay Station on April 14, completing the EPBM's second and final 750m Changi bound tunnel drive between both stations