J107 - Gek Poh update Q1 2023

 

12 March 2023 - Progress at the Gek Poh station site

For this update on contract J107's Gek Poh station, we're remaining fully within the quarter 1 of 2023. We'll present a further update of the progress within quarter 2 at a later date and this will allow you to see significant progress at the site.

5 February 2023
In February, we begin at the southern end and move up northwards. Work was underway to begin the construction of a portal pier around the corner of Jurong West Street 75, right outside Westwood Primary School. At this point, this was the only viaduct pier whose work was visible. The remaining viaduct piers up until the station structure were not visible.

A view northwards along Jurong West Street 75. A portal pier is under construction here.

An aerial view of the construction site. The rebar at the base of
the viaduct pier column is visible.

Formwork for casting at the side of the roadway.

A close up view of the rebar base for the viaduct pier column.

At the station itself, the piers had been standing cast for some time. Work was beginning on the construction of the horizontal sections where the crossheads supporting the concourse level would go. In February, only one pier was having this work carried out at the northern end of the station. The remaining piers towards the south were still under construction and had yet to be cast.

A view northwards along Jurong West Street 75 of the station site.

An aerial view of the station piers along the northern end of the station site.

Towards the centre, the station piers are still under construction.

Towards the southern end, piers are also under construction.

Casting has begun for the station pier crossheads that will support the
concourse level slab above the roadway below.

A close up view of the rebar installation work ongoing for the crosshead
construction.

Further north, along Jurong West Street 81, the viaduct piers had been completed to the flared crown level. One was in the midst of beginning crosshead construction with the supporting framework being installed and the formwork put into place. Further afield, on the site of the former Pioneer Primary School, works continued on the construction of further viaduct piers. Just before the Pan Island Expressway (PIE) crossing, a special pier was being constructed to support the special span which will not be supported in the middle.

A view northwards along Jurong West Street 81.

A final look back at the station site.

Work underway to install the support frame for viaduct pier crosshead casting.

Further afield, viaduct piers are under construction on the site of the former Pioneer Primary School.

Just before crossing the PIE, a special pier is being constructed for the single unsupported special
span across the expressway.

A close up view of the specially designed pier.

12 March 2023
For the March update, we begin at the north and travel further south along the site. Along Jurong West Street 81, the formwork for the casting of the viaduct pier crosshead was now in position. Upon the completion of the rebar installation, concrete pouring could be carried out to cast the crosshead. After curing, the formwork would be removed to allow viaduct construction works to commence. Other piers were also being prepared for crosshead casting and it is likely that viaduct construction will commence within this section first.

Looking southwards along Jurong West Street 81.

Looking northwards along Jurong West Street 81.

Looking northwards from block 750.

The pier nearest to the junction is having the framework installed.
Following this, the formwork for the crosshead will be installed.

At the station site, the casting of the first station pier's crosshead was completed. It is likely that further pre-cast segments will be added and post-tensioning work performed to "grow" out the crosshead further. Beams will then be installed to form the concourse level slab, with openings left for installation of lifts and escalator facilities. With the first pier's crosshead stubs completed, the second station pier was receiving the same treatment for casting of its' own crosshead. Further south, the remaining station piers had now been fully cast as well.

The first completed section of the station pier crosshead. Pre-cast segments may be added to
lengthen the crosshead to its full width later on.

With the first station pier's crosshead done, the second pier is now receiving the same treatment.

The remaining piers towards the south.

An aerial view of the works.

A view of the completed crosshead at the northern end of the station.

A diagram of the expected piers under contract J107.

A view of the station site looking northwards. One of the viaduct piers is under construction
just before the junction.

The southern viaduct section along Jurong West Street 75 also saw some progress. The single visible viaduct pier had now been partially cast. In future, this column will be within the road median, with the roadway passing underneath the portal frame. The column's counterpart could be seen outside Westwood Primary School with the rebar still at the base level.

A partially cast viaduct portal pier column.

The rebar base of the corresponding pier's column.

Another view of the viaduct portal pier column after completion of initial casting works.

We hope that this post has provided you with an idea of the progress at contract J107's Gek Poh station and viaduct sites. Do continue to follow us here and on our various social media channels to receive the latest updates on the JRL, CRL, TEL, CCL6 & other rail projects - links can be found in the column on the right or below.

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