J107 - Gek Poh update Q3 2023

 

28 September 2023 - A view of Gek Poh station seen from street level at end-Q3 2023.

Quarter 3 of the year has seen some milestones being achieved for the Gek Poh station and surrounding viaducts. These include the completion of casting of all the station pier's concourse level crosshead stubs, the installation of one prefabricated crosshead arm, completion of several viaduct spans and the commencement of construction of another portal pier's beam. Head on after the jump to find out more!

Station
Work at the beginning of the quarter was focused on completing the casting of the crosshead stubs for the concourse slab at the station. Bored piling work was also being done for the station's exits on either side before the work progressed to the installation of the crosshead arms, which would block access to the large machinery needed to perform such work.

In the middle of the quarter, work was completing on the casting of the crosshead stubs at the southern end of the station. At the other end, work was beginning on the installation of the support frames that would prop up the prefabricated crosshead arms. Following their installation, the prefabricated arm would need to undergo tensioning work so that the crosshead could support its own weight without having to rely on the frames.

By the end of Q3, the first arm had been installed, supported by the frame connected to the stub and another installed to act like a trestle structure. Casting of the final connecting beam between the two southern-most station pier columns was also underway.

30 July 2023 - A view of Gek Poh station seen from the south along Jurong West Street 75.

30 July 2023 - The bus stops along the street with a temporary shelter before commuters actually
arrive at the actual bus stop shelter.

30 July 2023 - A view of the bus stop shelter and the ongoing construction.

30 July 2023 - An aerial view of the station looking southwards. Casting for the past few
concourse level crossheads is underway.

30 July 2023 - An auger machine for bored piling and a crane on site just outside block 749.

30 July 2023 Gek Poh shopping centre which is next to the station, visible through the casted
concourse level beam and station pier columns.

30 July 2023 - A close up view of station piers to the south.

30 July 2023 - Piers with a newly casted crosshead and the final pier with crosshead casting
in progress.

30 July 2023

30 July 2023 - Progress of the station building and associated
viaduct piers seen from the south.

30 July 2023

31 August 2023 - A view of the ongoing station construction as at mid-Q3 2023. The auger machine
had been shifted over to the side of the shopping centre.

31 August 2023 - A view of the station from the other side of the street.

31 August 2023 - An aerial view of ongoing work at the station. A frame to support the installation
of the prefabricated crosshead arms is being put in place.

31 August 2023 - Casting of bored piles is underway just outside Gek Poh shopping centre.

31 August 2023 - A view of the southern station piers. All piers have had the crosshead stubs cast.
The next step, apart from casting the beam that connects all the piers together, will be to install
the prefabricated crosshead arms.

31 August 2023

31 August 2023 - A view of the station's southern piers.

31 August 2023

10 September 2023 - The two southern-most station piers seen from street level.

10 September 2023

10 September 2023 - A view of the station site as seen from the north, along Jurong West Street 82.
The auger machine has since been removed from site.

28 September 2023 - A view of the station worksite from outside Gek Poh Shopping Centre. The
frame to support the installation of the crosshead arm can be seen.

28 September 2023 - A close up of the crosshead arm installation assembly.

28 September 2023 - Station piers looking to the south.

28 September 2023

28 September 2023 - An aerial view of the northern station piers. Thus far, one arm of the
crosshead has since been installed.

28 September 2023 - A close up of the northern-most station pier, crosshead & installed arm.

28 September 2023 - An aerial view of the station pier columns to the south. The auger machine had
been shifted back to this side of the street.

28 September 2023 - Station and viaduct piers to the south.

28 September 2023 - A view of the station crosshead construction work.

28 September 2023

28 September 2023

Viaducts
Besides the station, work on the viaduct has been making significant progress as well. The most advanced is the section along Jurong West Street 82. Over the course of the past quarter, the spans for 2 of the piers had been completed. Work then started on the next pier's span, just immediately north of the Gek Poh station building.

To the south, work had begun on the construction of the remaining piers. Construction of the portal beam for the second of three portal piers had commenced as well, while sheet piles were installed to allow for the excavation to expose the bored piles for a second column.

30 July 2023 - A view of viaduct segments installed along Jurong West Street 82. The span for the
pier on the left is completed but the span for the pier on the right requires a few more segments.

30 July 2023 - Casting of the movement & expansion joint located along Jurong West Street 82.

30 July 2023 - A view of the viaduct construction along Jurong West Street 82, looking south
towards Gek Poh station.

30 July 2023 - An aerial view of the series of portal piers as the line rounds the bend outside
Westwood Primary School.

30 July 2023 - The completed portal pier is a movement & expansion joint pier. It is also the
contract boundary with contract J105 further south.

30 July 2023 - An aerial view of the several portal piers in various stages of completion. The street
will be diverted to run underneath the portal piers when construction is completed.

30 July 2023 - Construction ongoing for the piers between the junctions of Jurong West Street 75
with Streets 73 & 74.

30 July 2023 - A view of the completed crosshead for the viaduct pier immediate north of the
Gek Poh station.

30 July 2023 - An aerial view of viaduct span construction underway along Jurong West Street 82.

30 July 2023

30 July 2023 - Two viaduct pier columns, awaiting the portal beam's construction. The northbound
carriageway of Jurong West Street 75 will run through these columns in future.

30 July 2023 - A close up view of the viaduct deck being built along Jurong West Street 82. The
absence of a dividing wall along this section indicates that a crossover will be located here.

31 August 2023 - A view of the progress of viaduct construction at the junction of Jurong West
Streets 75 & 82 with Jurong West Avenue 5.

31 August 2023 - The beams used for the initial segment launching have been installed at the
viaduct pier immediately north of the Gek Poh station.

31 August 2023 - A view of the viaduct construction from Gek Poh Shopping Centre.

31 August 2023 - The gap between the spans along Jurong West Street 82 had been closed. Also,
the completed movement & expansion joint crosshead can be seen.

31 August 2023 - Another view of the road junction & viaduct piers.

31 August 2023 - Formwork in place for the construction of the portal beam that will connect the
two pier columns.

31 August 2023

31 August 2023 - There has been no change to the movement & expansion joint portal pier.

31 August 2023 - An aerial view of the portal piers under construction outside Westwood
Primary School. Sheet piles have been installed for construction of the second column's pile cap
at the middle portal pier.

31 August 2023 - Pier construction along Jurong West Street 75, just south of Gek Poh station.

31 August 2023 - An aerial view of the support framework & formwork ahead of portal beam
casting.

31 August 2023 - Excavation work underway to create the pile cap above the exposed bored piles.

31 August 2023 - An aerial view of the completed spans along Jurong West Street 82 and the
pier north of the station with the initial launching beam installed.

31 August 2023 - A view north to the site of the former Pioneer Primary School.

10 September 2023 - Excavation pit for one of the viaduct piers.

10 September 2023 - The base of a pier beginning to pop up, between Jurong West Streets 73 & 74.

10 September 2023 - A pier column completed up to crown level.

28 September 2023 - The viaduct pier immediately north of the Gek Poh station has since had its
first segments installed.

28 September 2023 - The completed spans, looking north to Jurong West Street 82.

28 September 2023 - Frames with platforms for tensioning work installed.

28 September 2023 - A viaduct pier immediately to the south of the station has a completed
crosshead.

28 September 2023 - Portal beam casting underway off in the distance.

28 September 2023 - Backfilling work before the pier column proceeds further.

28 September 2023 - A view of the portal beam construction.

28 September 2023 - A view southwards of the other portal piers.

28 September 2023 - The middle portal pier still only has a single column constructed.

With significant progress made on all fronts, as the year comes to an end, more milestones will be reached. Do stay tuned as we come up with a year-end update soon.

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