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Overview of CRL1 stations CR2 - CR5, CR8 - CR10 & CPE station CP4 as at February 2026. |
It's been a while since we've had a Snapshot update for the Cross Island Line (CRL). Here's one from February 2026, covering several of the sites across Phase 1 and Punggol station along the Punggol Extension. How have works progressed, especially at the line's eastern end? We find out all that and more in this update after the jump.
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| CRL1 tunnel chart as of end-2025, to the team's best knowledge. |
Tunneling works along the Cross Island Line (CRL)'s phase 1 have been progressing well, thanks to the favourable soil conditions in the eastern side of the island. Soil here is typically composed of old alluvium, great for tunneling as seen through the quick work made of tunnels under several contracts of late.
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| August 2023 - A view of the displays within the CRL1 Project Information Centre. The display on the left shows the Soil Profile along the CRL1. |
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| A screenshot of the Soil Profile along CRL1. Source: CRL1 Virtual PIC |
With the favourable Old Alluvium in Eastern Singapore, here are some updates on tunneling work across CRL1.
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Overview of CRL1 stations CR4 - CR12 as at October 2025. |
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Overview of CPE stations CP2 - CP4 & CRL2 stations CR16 - CR19 as at October 2025. |
It's been a while since we've done such an extensive coverage of the Cross Island Line (CRL) across its three current phases that have been announced thus far, hence we thought we'd let October be our month of diversity. Updates for this month stretch from Pasir Ris East all the way to Punggol & Jurong Lake District. If you've been curious on how things were progressing, this post is for you. Do be ready, this update's kind of MEGA.
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Overview of CRL1 stations CR3 - CR10 as at August 2025. |
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| Overview of CRL1 station CR11 & CRL2 stations CR17 - CR19 as at August 2025. Top (L - R): CR11 – Ang Mo Kio, CR207 - Launch shaft Middle (L - R): CR17 - Clementi, CR18 - West Coast Bottom (L - R): CR210 - Launch shaft, CR19 - Jurong Lake District |
Roughly about three-quarters into the year, how has progress been along the Cross Island Line? We take a closer look at some of the key sites along the line in both phases 1 and 2 in this August look-back.
Beyond the upcoming road diversion mentioned in our post on the contract CR115 roadshow, several other Cross Island Line (CRL) contracts will be implementing similar diversions at their respective project sites. These changes to the road networks are scheduled to take place between mid & late August. The details after the jump.
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Overview of CRL1 works under contracts CR106 - CR117 as at July 2025. |
There's a fair bit to update in this snapshot of the Cross Island Line (CRL) for July 2025. This update will mainly focus on progress along phase 1 of the line, the section with the most progress thus far due to the section's earlier announcement, contract award and commencement in general. Nonetheless, tunneling is also underway across all announced phases thus far, so we will touch a little on the progress made on that front thus far. All this & more after the jump.
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| An overview of CRL1 contracts CR101 - CR111 as of May 2025. Top (L - R) : CR101 - Changi East Depot, CR102 - Tunnels, CR103 - Aviation Park station Middle (L - R) : CR106 - Loyang station, CR107 - Pasir Ris East station, CR108 - Pasir Ris station Bottom (L - R) : CR109 - Tampines North station, CR110 - Large bored tunnel, CR111 - Defu station |
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| An overview of CRL1 contracts CR112 - CR117, CPE contracts P102 & P103 and CRL2 contract CR202 as of May 2025. Top (L - R) : CR112 - Hougang station, CR113 - Serangoon North station, CR115 - Tavistock station Middle (L - R) : CR116 - Ang Mo Kio station, N109A - Teck Ghee station, CR117 - Bright Hill station Bottom (L - R) : P102 - Elias station, P103 - Cripple siding, CR202 - Large bored tunnel |
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| An overview of CRL2 contracts CR205 - CR211 as of May 2025. Top (L - R) : CR205 - King Albert Park station, CR206 - Maju station Middle (L - R) : CR207 - Tunnels, CR208 - Clementi station, CR209 - West Coast station Bottom (L - R) : CR210 - Tunnels, CR211 - Jurong Lake District station |
It has been a while since we've done a snapshot feature of the Cross Island Line (CRL), with our last being done in February for the Punggol Extension. Part of this stems for the works being "less noticeable", since the majority of this takes place underground and relatively out of sight. Another part is that it also appears that updates on the CRL aren't as popular compared to updates on other lines (granted, the above ground line updates are A LOT more interesting as you actually see things change with most monthly updates). Nonetheless, we thought it's time to see where the CRL is in progress with this rather comprehensive mid-year update.
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| 28 February 2025 - A view of the NEL station atrium amidst modification works. |
As we approach the end of February, works at Hougang's North East Line (NEL) station are beginning to ramp up as it prepares for additional footfall when the Cross Island Line (CRL) connects here. Part of the initial works will see a temporary platform lift being installed to connect the platform and concourse levels. The markings for hoarding along this installation were previously laid out approximately a month ago.
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| 31 January 2025 - An aerial view of the Hougang station site. |
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| 31 January 2025 - An aerial view of the tunneling launch shaft at the northern end of the project. |
It has been some time since we caught up and provided more detailed updates on the construction of some Cross Island Line (CRL) stations. We'll start off with some updates on Hougang, seeing how there has been an increase in activity over the past 2 months with the assembly and subsequent launching of the Tunnel Boring Machines (TBMs) at the station site. More details after the jump!
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| Contract CR102 TBMs during the assembly phase at the launch shaft. Source: STEC |
A happy new year to all our readers & followers! Recently, we have come across a few new images of tunnel boring machines (TBMs) for the Cross Island Line (CRL) phase 1. Coupled with recent deliveries to sites at Hougang, Ang Mo Kio and Defu, its definitely TBM season for the CRL. What better way to begin the new year than by taking a look at all the machines responsible for building the tunnels for the upcoming CRL1? More of them after the jump.
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| 13 December 2024 - The TBM tail shield during lifting operations. |
Contract CR112 has made some headway since the arrival of the Tunnel Boring Machines (TBMs) at the site. Two TBMs will be used to bore the twin tube tunnels towards Serangoon North station. After a public name voting process, the TBMs are to be named Artemis & Valkyrie. Parts of the first TBM were lowered into the launch shaft on 7 December 2024 and the tail shield was lifted in on 13 December 2024.
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| A render of the Jurong Lake District station being built under contract CR211. Source: LTA |
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| 20 September 2024 - The launching ceremony for tunneling under contract CR115. Source: LinkedIn |
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| Tunnel boring machines for contract CR112. Source: Forms.sg |
We have a quick update on some developments along the Cross Island Line (CRL) to share: The launch of contract CR211's Telegram channel & TBM #1 for contract CR115 and confirmed names of the tunnel boring machines (TBMs) for contract CR112. More information after the jump.
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| An overview of 2 CRL1 contracts as of August 2024. Top: Changi East depot Bottom: Contract CR110 launch shaft at Paya Lebar Air Base |
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Overview of CRL1 stations CR3 - CR11 as of August 2024. |
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Overview of CRL1 stations CR12 – CR13, CPE stations CP2 –
CP4 & CRL2 stations CR15 – |
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| 30 June 2024 - An overview of the station box as of end-Q2. |
Contract CR112 was one of the first station contracts awarded for the Cross Island Line (CRL)'s first phase back in 2020. Since then, the contract has come a long way along but, as of Q2, had yet to commence tunneling work. This is despite the fact that a gantry crane being installed near the contract's launch shaft since January this year. Nonetheless, Q2 marked a significant milestone for the contract with the completion of phase 1 diaphragm wall works. This milestone also saw the excavation of portions of the station box commence.
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Overview of CRL1 contracts CR102 - CR115 as of July 2024. |
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Overview of CRL1 contracts CR116 & N109A, CPE contracts P102 - P103 & CRL2 contracts |
July was a momentous month for the Cross Island Line (CRL). All civil contracts for the construction of stations across phases 1, 2 and the Punggol extension were awarded. Along phase 1, several contracts were in the midst of Tunnel Boring Machine (TBM) assembly and subsequent launch as well. In this update, we take a brief look at the progress made across the line's first few phases.
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Overview of CRL1 stations CR4 - CR7 as at May 2024. |
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Overview of CRL1 stations CR8 - CR11 as at May 2024. |
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Overview of CRL1 stations CR12, CR13, CR15 & CR17 as at May 2024. |
Another week, and another month goes by. We're now clearly heading towards the middle of the year with June underway. Here's a look back at the progress made at the various Cross Island Line station sites in May 2024. There's a bit more to see now that some of the Tunnel Boring Machines are in the ground and beginning their boring journeys through the east to construction the line.
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| Overview of CRL1 stations CR4 - CR13 as of April 2024. Top (L - R): CR4 - Pasir Ris East, CR5 - Pasir Ris, CR6 - Tampines North Middle (L - R): CR7 - Defu, CR8 - Hougang, CR9 - Serangoon North Bottom (L-R): CR10 - Tavistock, CR11 - Ang Mo Kio, CR13 - Bright Hill |
We're pretty much done with April of 2024 - what a quick first third of the year it has been! Things are quickly becoming serious over along the Cross Island Line (CRL)'s first phase of 12 stations stretching from Aviation Park to Bright Hill with tunnel boring machines (TBMs) being delivered to site and lowered into launch shafts, station box excavation starting and bored piling continuing. We'll do a brief overview of the CRL1 stations as of the end of April 2024. More after the jump!
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| 14 March 2024 - An aerial view of the contract CR112 worksite for Hougang station as at end-Q1. |
Contract CR112 was one of the first civil contracts awarded for the Cross Island Line's (CRL) phase 1. The work site for the station is at various stages across different sites at the station box and exits. Exciting progress made over the past quarter has seen the commencement of excavation works at the main station box site and the waterproofing of parts of the subway connecting station exit 6. More pictures and information after the jump.
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Overview of CRL1 stations CR4 - CR13 as at March 2024. |
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| Overview of CPE & CRL2 stations CP2 - CP4 & CR14 - CR19 as at March 2024. Top (L - R): CP2 - Elias, CP3 - Riviera, CP4 - Punggol Middle (L - R): CR14 - Turf City, CR15 - King Albert Park, CR16 - Maju Bottom (L - R): CR17 - Clementi, CR18 - West Coast, CR19 - Jurong Lake District |
It's been a whirlwind first quarter of the year. We take the opportunity to check in on the progress of the various construction sites along the Cross Island Line (CRL)'s various phases in the month of March and provide a glimpse at the progress being made. Do check out the various projects after the jump.
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Overview of CRL1 stations CR3 - CR13 as at mid-to-late February 2024. |
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Overview of CPE & CRL2 stations CP02 - CP04 & CR15 - CR18 as of mid-to-late February 2024. |
The first few months of the year have quickly past and we're slowly getting back into the monthly routines. Here's a snapshot update of the Cross Island Line (CRL)'s various stages of construction for the month of February with work started on phase 1 and the Punggol Extension. The latest phase announced - phase 2 - has also begun early works which we also explore in this update.
