Sunday, December 8, 2024

J103 / Hong Kah, Corporation & Reception Tracks - A 2024 progress report

Stations of contract J103 seen at the end of 2024.

We're on a roll to wrap up progress made on the Jurong Region Line (JRL) through the 12 months of the year. This series began with contract J101 for the Tengah depot and was followed by contract J102 for Choa Chu Kang, Choa Chu Kang West & Tengah stations. We'll now continued on to contract J103 for Hong Kah and Corporation stations & the connecting Reception Tracks that link the main line with the depot.

Contract J103 has done well on the station building front but suffers on the viaduct construction aspect. The station buildings at both Hong Kah & Corporation have advanced to the stage of installation of the station roof frame and subsequent roofing works. However, there remain large gaps in the viaducts where spans were not yet constructed or viaduct piers were still being built. Of importance though, is to note that the former joint venture between Eng Lee & Wai Fong was affected by the former's financial performance which ultimately saw the company shut down, leaving the latter to carry on with the project as the sole contractor. More on these issues after the jump.

JS4 - Hong Kah
At the beginning of the year, work at the station was focused on the concourse level. By the end of the year, the majority of the station's roof had been installed with a few sections towards either end needing some further work till the structure would be fully installed. The installation of the roof frame overhead typically signifies that station structural works are relatively completed up to the platform plant room levels. The station has one exit located across Tengah Garden Avenue from the main building. Works for this exit have begun, including for the column supporting a pedestrian overhead bridge connecting the two structures together.

10 January 2024 - A view of the Hong Kah station from the south side of the Pan Island
Expressway (PIE) in early 2024.

7 December 2024 - A view of the Hong Kah station from the south side of the Pan Island
Expressway (PIE) in end 2024.

18 February 2024 - A view of the side profile of Hong Kah station in early 2024.

7 December 2024 - A view of the side profile of Hong Kah station in end 2024.

7 December 2024 - A view of the Hong Kah station and viaduct piers south of the station.

7 December 2024 - A close up view of Hong Kah station with a few interior features visible such
as the lift shaft frames and staircases.

27 October 2024 - An aerial view of viaducts completed under contract J102 and the connecting
span under contract J103. Tengah Garden Avenue will run underneath, where an exit will be
located across the road from the main station building.

27 October 2024 - Stacks of parapet walls can be seen at the end of Tengah Garden Avenue.
Closer to the viaduct, a supporting column for the pedestrian overhead bridge can be seen.

27 October 2024 - A view of the exit podium across Tengah Garden Avenue can be seen.

JS5 - Corporation
This station was the quickest to have its roof frame installed, being the first to do so among all JRL stations. At the beginning of the year, works were beginning on the structure of the platform level. By the year's end, interior fittings were being installed. At concourse level, grey frames along the station's edge could be seen along with a portion of cladding hung from the concourse's ceiling. Various utilities were also installed along the concourse ceiling.

In addition, link bridges connecting to the station's 3 exits were structurally completed. Works had moved on to the installation of the link bridge roof frames as well, while the exit podiums had also begun construction.

10 January 2024 - A view of Corporation station under construction in early 2024 with Jurong
West Avenue 2's westbound lanes diverted to the station's north side.

5 December 2024 - A view of Corporation station as at end 2024 with Jurong West Avenue 2's
westbound lanes since reinstated to the south side of the station.

5 December 2024 - A view of the approach viaducts, pier crossheads and station from street level.

5 December 2024 - The link bridge connecting to the station's northern exits can be seen.

5 December 2024 - Another view of the station's link bridge connecting to the northern exits.

5 December 2024 - Another link bridge on the station's southern side, with roof frame being
installed.

5 December 2024 - A close up view of the roof frame installation works.

5 December 2024 - Ongoing work for the southern exit's podium where vertical access is being
constructed.

5 December 2024 - A view of the station's northern side.

5 December 2024 - Interior fitting installation had commenced at the station. The grey coloured
frames will likely hold clear perspex while the mounting system will hold aluminum cladding.
However, this may be a trial installation or a test set ahead of full scale installation.

5 December 2024 - At platform level, the services boom from which signage, speakers and lighting
will be hung can be seen installed. Utility lines will be laid through, after which cladding will be
installed over.

5 December 2024 - Another view of the services boom installed along the length of the Choa
Chu Kang-bound platform.

Viaducts west of the station have been mostly completed, with only a few spans missing. Progress here is much further along than at other sections, especially the section between the two stations which involves the construction of reception tracks connecting to the depot. Viaduct works are being carried out by sub-contractor Freyssinet, a specialist in bridge construction.

18 February 2024

5 December 2024

Reception Tracks
This section between the two stations under the contract will see flying junctions as the reception tracks cross over the main line and the viaducts twist and turn to navigate across the expressway. Of the 3 to 4 sets of viaducts that need to be completed, only about a quarter has seen progress with the viaduct spans. The remaining three quarters have only seen viaduct pier construction take place through the year.

It is unclear to what extent Eng Lee's shut down has had on the joint venture as Wai Fong sets to finish off the contract on its own. Nonetheless, progress on this section has been slow going. The unfortunate part is that without the reception tracks being completed, the trains from the depot would not be able to connect to the main line. Hence, this is an essential piece of the line's infrastructure. At the end of the year, only the western reception track has had most of its viaduct spans completed. However, the connection point to the main line still requires a significant amount of works to be completed before track laying works can proceed.

11 January 2024 - An aerial view of the western reception tracks in early 2024.

5 December 2024 - An aerial view of the western reception tracks in end 2024.

11 January 2024 - An aerial view of the western reception track viaducts meeting with the
main line viaducts in early 2024.

5 December 2024 - An aerial view of the remaining sections to go till the western reception tracks
can merge with the main line viaduct.

5 December 2024 - Significant gaps still remain in the viaduct section where the western
reception tracks meet with the main line viaducts.

5 December 2024 - The main line viaducts have had a greater degree of completion than the
viaducts for the western reception tracks in the sector where they merge.

5 December 2024 - Despite having a launch gantry previously, sections where movement &
expansion joints were located were skipped over. The remaining work is slow going and tedious.

5 December 2024 - A view of the multi-level viaduct pier that serves as a regular pier for the
reception track (top level) but a movement & expansion joint pier for the main line (lower level).
Both levels require further work before the viaducts can be considered to have basic structural completion.

The eastern reception tracks are less complete, with some of the viaduct piers only at the beginning stages of completion. Some viaduct piers have stood in the exact same condition that they were in for practically the entire year with little to no progress made.

11 January 2024 - Viaduct piers for the eastern reception track in early 2024.

5 December 2024 - Viaduct piers for the eastern reception track in end 2024.

11 January 2024  - Viaduct piers for the eastern reception track in early 2024.

5 December 2024  - Viaduct piers for the eastern reception track in end 2024.

5 December 2024 - The base of a pier column just beginning to emerge.

5 December 2024 - Extraction of sheet piles for the casting of the pile cap for the pier.

5 December 2024 - Further viaduct piers just beginning the pier column casting process for
both the main line and reception track viaducts on approach to Hong Kah station.

2025 will hopefully be a year of catch up for the viaduct construction aspect of the contract, given how essential the viaducts are to the operation of the line. We wish the contractor a safe & smooth 2025 ahead.

This post will also be available on Instagram & Facebook on 11 December 2024.

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