J105 - An update in Q1 2025

The two station sites under contract J105 towards the end of Q1 2025.

Through Q1 2025, works under contract J105 have plodded along at the Jurong West and Bahar Junction station sites. Key milestones under the Jurong Region Line (JRL) contract include the commencement of exit podium works at both stations, the commencement of escalator installation works at Bahar Junction station and continued progress on viaduct span construction. We'll take a closer look at the achievements made after the jump.

J105 / Jurong West & Bahar Junction - A 2024 progress report

Contract J105 stations as at the end of 2024.
Top: Jurong West station
Bottom: Bahar Junction main station building

The Jurong Region Line (JRL) 2024 progress report continues with an update on contract J105, responsible for the construction of Jurong West & Bahar Junction stations. This is the fourth update in the series to close off an update on the progress made along the JRL over the 12 months of the year. Here are the first three posts in the series:

• Contract J101 for Tengah depot
• Contract J102 for Choa Chu Kang, Choa Chu Kang West & Tengah stations
• Contract J103 for Hong Kah & Corporation stations

Several milestones were achieved through the year under the contract. These include the completion of significant stretches of viaduct spans along Jurong West Avenue 2, completion of the two concourse level spans for the Bahar Junction satellite station building and the commencement of roofing works at both stations. Parapet wall works had also begun between the two stations. As of end 2024, work was going on to complete the remaining sections of viaducts where gaps were still present. We'll take a look at all of China Railway No 11 Bureau's accomplishments for 2024 after the jump.

J105 - Jurong West & Bahar Junction update Q2 2024

A view of the Jurong West (top) and Bahar Junction (bottom) stations under contract J105 as
of end-Q2.

Along phase 1, contract J105 is without a doubt one of the most interesting contracts to observe, given that it encompasses the construction of the unique Bahar Junction station. Also included under the contract is the more tame and templated Jurong West station. Over the past quarter, gains have been made in both stations' construction. The viaducts along the stretch were also coming together as well, with sections of completed spans progressing to the next stage of construction.

J105 - Jurong West & Bahar Junction update Q1 2024

 

18 March 2024 - A view of the progress of work at Jurong West station at end-Q1 2024.

21 March 2024 - Progress of work at Bahar Junction station as of end-Q1 2024.

Work over at contract J105 has seen the roads "dance" as Senior Minister of State for Transport, Amy Khor, described them once during an engagement session for the North-South Expressway. At both station sites, work has seen the diversions of roadways as construction progressed. We'll take a deeper look into the progress made over the first quarter of the year.

J105 - Jurong West update Q3 2023

 

16 September 2023

Construction is not always boring. Occasionally, you do come across a stunning landscape with partially constructed viaducts that catch the light in the right manner. Some of the images captured over at contract J105's Jurong West site over the past quarter were really magical. The theme of this post will be that pictures do speak a thousand words. Do check them out after the jump!

J105 - Jurong West update Q2 2023

 

15 June 2023 - Concrete pumping in progress for the casting of the station concourse slab.

To finish off our Q2 2023 updates on the Jurong Region Line (JRL) phase 1, we visit contract J105 for the construction of Jurong West station. We had earlier done an update between Q1 & Q2, hence this update will cover the updates of the remaining months for Q2 2023.

J105 - Jurong West update Q1/Q2 2023

 

19 March 2023 - Viaduct piers under construction near contract J105's
Jurong West station site.

It has been a while since we've updated on the progress at Jurong West station under contract J105, the last update being towards the end of 2022. Similarly to Hong Kah station's update, we're doing one that sort of straddles between Q1 and Q2 of 2023. If we get around to getting more photos of the site that show visible differences, we'll be sure to update. Nonetheless, here's a recap of how things have progressed in Q1 and the first month of Q2. For this update, we'll be doing things chronologically. Do view all the photos after the jump.

The Six Stages to building an elevated MRT line - Introduction

 

It has been a while since the last elevated line was constructed in Singapore, with the Tuas West Extension on the East-West Line being the most recent addition back in 2016 following the completion of construction along the line, and there after its opening in 2017. The city is now receiving its first new elevated line since things went underground with the third line in the network, the North East Line (NEL). What does it take to build an elevated system? Much of our recent rail construction has taken place underground, hence works may not be as visible as that of an elevated line. Join us as we deep dive into the stages of construction of an elevated line in a six-part series that gives you a better understanding of how the line is constructed.

J105 - Jurong West year-end update

 

16 December 2022 - A view of the station support piers coming up in the road median.

Station support piers are now visible in the road median at Jurong West station. These piers will enable the concourse level to be elevated above the roadway below. Similar to Corporation station to the east, we expect that crossheads may be constructed next to allow precast beams to be laid, forming the concourse slab level.

J105 - Station piers popping up

 

30 October 2022 - A view of the rounded piers located in the road median.
These piers will support the station structure which will be cantilever
above the road.

30 October 2022 - 5 station piers visible. Are you able to spot all 5?

Jurong West station has been progressing steadily and most likely is the second most advanced station currently under construction along the Jurong Region Line (JRL) after Tengah Plantation. This station only falls into second place as the concourse slab crossheads are not yet under construction unlike the former.

J105 - Piers at Jurong West

10 September 2022 - An aerial view looking westwards. A pier shaft is in
the initial stages of being constructed.

It's been a while since we visited Jurong West station site, so we're making a stop by to check out the progress here. Since our last visit, there is some visible progress by way of piers which are beginning to take shape. One prominent pier column shaft base has been cast and it will be a matter of time before it emerges from the sheet pile pit it is currently in, much like a seedling sprouting.

JRL1 - Station renders

A view of Hong Kah station
Source: LTA & Eng Lee-Wai Fong JV

Recently we came across some new renders of the stations along the Jurong Region Line (JRL). We thought it would be fitting to do a re-post of all the renders we've amassed thus far. Do stay tuned as we'll let you know where we got the new renders from after the phase 3 batch.

JRL1 Construction update - Q3 2021

8 September 2021 - A view of the Choa Chu Kang interchange site as seen from an MRT train.

It has been a few months since our last update and unfortunately, there has not been too much progress on the line's construction. Majority of the works are still focused on the preliminary stages of utility diversion and site preparation. At some sites, there has not been much visible progress while others show a bit more visible work. In this update we'll do our best to give an overall summary of the progress.

Contract update - J105 Jurong West

02 July 2020

Contract J105 for the construction of Jurong West and Bahar Junction stations and associated viaducts for the Jurong Region Line was awarded to China Railway No 11 Bureau in December 2019. Prior to construction works commencing on site, extensive utility diversion works have been ongoing at the site of the future Jurong West station.

Contract awards - J101 & J105

Concept design options for Tengah Depot.
Source: LinkedIn

Over the last few weeks, several contracts for civil construction packages have been awarded by the Land Transport Authority to China Railway 11 Bureau Group who previously completed stations on the East West Line's Tuas West Extension in 2016. These consist of back-to-back awarded contracts J101 for the construction of Tengah depot and J105 for the construction of Jurong West & Bahar Junction stations.

J105 - Tender closed

Contract J105 entails the construction of Jurong West and Bahar Junction stations along with associated viaducts on the Jurong Region Line (JRL). The contract was first floated for tender in February and closed last week on 25 July 2019. A total of 4 companies responded by placing bids for the contract.

List of companies bidding for contract J105.
Source: LTA

Pre-construction - Jurong West

The second of three stations located along Jurong West Avenue 2 is Jurong West station. To be located near the St. Joseph's Home, the station will also serve the Boon Lay Gardens residential precinct.

A screen grab of Jurong West station seen in front of the Jurong Innovation district.
Source: LTA

18 February 2019 - Looking eastwards along Jurong West Avenue 2 from the junction
with Jalan Bahar & Jalan Boon Lay

Contract tendering update - J101, J102, J103, J105, J110

Following the official announcement of the Jurong Region Line (JRL) in May 2018, the tendering process for the civil contracts began around November last year. To date several large civil works contracts have been floated for tender.

Contract list as of 18 February 2019.

These include the civil works contracts for the construction of Tengah depot (contract J101), Choa Chu Kang interchange, Choa Chu Kang West and Tengah stations (contract J102), Hong Kah and Corporation stations (contract J103), Jurong West and Bahar Junction stations (contract J105) and Jurong East interchange (contract J110). In total, there should be approximately 13 civil works contracts for the line. To date 5 of these contracts have been floated and 1 contact - J102 - has been closed.

Contract awards can be expected approximately 6 months after the closure of the tender while tender of the remaining contracts should be expected to be completed by the year-end. Once the contracts have been awarded, a ground breaking ceremony will be held - potentially some time after the first quarter of 2020. This is when construction along the line will begin to ramp up in intensity. In the meantime, advanced work contracts are underway to facilitate the relocation of utilities, with the bulk of these contracts due for completion by September 2020.

Roads JRL may align with - Jurong West & NTU branch

Indicative map of Jurong Region Line (JRL)
Source: LTA

Previously we looked at how the Jurong Region Line (JRL) may weave its way through to Jurong East & West Coast. Today we look at how it would weave itself to its other 2 terminals - NTU and Jurong Industrial Estate.