CCL6 Preview

4 July 2026 - A view of all 3 Circle Line stage 6 stations seen during the preview open house.

The Circle Line stage 6 (CCL6) preview was held today to allow members of the public to familiarise themselves with the 3 new stations being added to the line. Free rides on the sector were held as part of the public preview. If you haven't heard, SG MRT Construction (SGMC) is holding a short contest where you'll be able to win credits at online shops such as knackstop and Play-E_hobbies. Find out more about SGMC's CCL6 contest here. The contest closes on 13 July, so you still have time to submit an entry after the sector opens on 12 July to participate. Let's now recap a little about the 3 stations along CCL6.

CC30 - Keppel (Contract 882)
Contractor: Nishimatsu - China State Construction Engineering Corporation (CSCEC) Joint Venture
Scope: Construction of two level underground station at Keppel & bored tunnels connecting to HarbourFront and Cantonment stations

Keppel station is a typical island-platform station served by 2 main line tracks. 2 additional tracks offer stabling sidings within the station as well, akin to Mattar and Fort Canning stations along the Downtown Line, where such provisions were first noted. The station features a wide, column-free platform area and skylights in the centre of the station allow natural light to trickle down to the platform.

4 July 2026 - A view of the platform area while descending from the concourse.

4 July 2026 - A view of the platform area with the large skylights visible.

4 July 2026 - Both skylights flanking the ceiling feature of the tunnel boring machine cutterhead.

The concourse area featured a semi-permanent exhibition space that currently details on engineering aspects of building this sector of the line. The exhibit pays homage to the challenges that the teams overcame to bring the line and stations to reality and also allows members of the public to view the harsh nature endured by the project teams. One of the cutter discs from the tunnel boring machines used to construct the tunnels from Keppel to Cantonment station was on display, showing the amount of wear endured by the mechanical bit in the course of tunnel construction.

4 July 2026 - A view of the semi-permanent exhibition area at concourse level.

4 July 2026 - Exhibit on the engineering challenges of constructing CCL6.

4 July 2026 - Exhibit featuring the worn cutter disc used on a tunnel boring machine during
the project's construction.

Here's a view of the tunnels between Keppel and Cantonment for you to enjoy and relive the moments from the preview open house:

CC31 - Cantonment (Contract 883)
Contractor: China State Construction Engineering Corporation (CSCEC)
Scope: Construction of four level underground station at Cantonment

Cantonment station is a standard island-platform station served by 2 main line tracks. There are no additional tracks at this station, which also doubles up as a Civil Defense (CD) shelter - the only CD shelter station along CCL6. The design inspiration for the station was derived from the old Tanjong Pagar Railway Station (TPRS) which sits above the station site. This inspiration gave rise to the double volume barrel-vaulted ceiling design of the station platform, complete with mimicked stained glass finishings.

4 July 2026 - A view of the station's double volume barrel-vaulted platform ceiling.

4 July 2026 - A view of the platform ceiling and stained glass fixtures.

4 July 2026 - A close up view of the stained glass fixtures. The reflection of the stained glass on the
opposite side can be seen on the cladding as well.

Artwork, such as the stained glass at the platform level, make the stations more vibrant. Art In Transit has been a mainstay of all rapid transit system projects since its introduction during the development of the North East Line. The CCL6 stations are no exception. While the stained glass at Cantonment station's platforms are not part of the Art in Transit programme, the official art piece developed for the station can be found at the underpass level. The piece - titled 'The Journey Between' features chromatic shapes along the wall and are meant to reflect the commuters as they pass by, allowing them to become part of the environment as they commute.

4 July 2026 - Write up for the Cantonment station Art in Transit installation.

4 July 2026

The use of colours that were reminiscent of the old TPRS, such the the green terrazzo walls, leant a nice touch to the station.

4 July 2026 - A view of the fare line at the lower concourse level. The green colour scheme can be
seen on the walls behind.

CC32 - Prince Edward Road (Contract 885)
Contractor: China Railway Tunnel Group (CRTG)
Scope: Construction of three level underground station at Prince Edward Road & bored tunnels connecting to Cantonment station

The design inspiration for this station, located near to the bay, was unsurprisingly maritime heritage. Tiling that mimicked the appearance of wooden slats was used for the amenity block at concourse level to give off the effect of resembling a boat's hull. At the eastern end of this block, an additional passenger service centre room was seen. The counter windows and entry door were blocked off. A peek between the gap of the door and window, however, unveiled that the interior was kept bare with concrete walls visible and no cladding or further furnishings added.

4 July 2026 - A view of the station's concourse area. The amenities block was designed to mimic
a boat's hull, with cladding built to look like wooden slats used.

4 July 2026 - A view of the second, unused passenger service centre, at the station concourse's
eastern end.

At other levels of the station, a wave pattern was used for the ceiling design to mimic rippling water and add some vibrancy to the station. At the western end of the station, a turnout point sat, with buffer stops added before the rails end in front of a wall. Accessibility maps for the platform levels indicate that there are sealed off platforms that would accommodate another 3-car line's tracks. The future plans for these set of platforms are not immediately clear, although there may be potential for such a line to serve the transport hub being planned for as part of the Greater Sentosa Master Plan. Nonetheless, no information has come forth to substantiate this, thus there is no further clarity on the areas which these provisioned platforms will serve.

4 July 2026 - Platform B, the lower platform with a ceiling design mimicking rippling water.

4 July 2026 - Platform A, the upper platform with a ceiling design mimicking rippling water.

4 July 2026 - The turnout stub, ending in buffer stops before a wall.

4 July 2026 - Accessible route map for Platform A. The outline of another 3-car train can be seen
for the platform directly opposite on the same level.

4 July 2026 - Accessible route map for Platform B. The outline of another 3-car train can be seen
for the platform directly opposite on the same level.

Back at the concourse level, the station's artwork is located along the linkway to Exit 1. The artwork at the station is titled "Doppler" and features a repeating set of glass fragments that adorned one side of the wall.

4 July 2026 - A write up on the station's Art in Transit installation.

4 July 2026

4 July 2026

Here's a view of the tunnels between Cantonment and Prince Edward Road for you to enjoy and relive the moments from the preview open house:

Contract 886 - Tunnels in Marina Bay
Contractor: Koh Brothers
Scope: Cut & Cover tunnels linking Prince Edward Road & Marina Bay stations and turnback siding

An essential piece of the section was constructed under contract 886. These are for the cut & cover tunnels linking Prince Edward Road to Marina Bay station and to a turnback siding that will be used to short-turn some train services during peak hours. Unfortunately, apart from being functional, there is little else remarkable about the tunnels.

4 July 2026 - A view of the tunnels from the station.

4 July 2026 - The tunnel to the left leads to the turnback sidings that end before Park Lane.

Here's a view of the tunnels between Prince Edward Road and Marina Bay for you to enjoy and relive the moments from the preview open house:

Fun Facts about the Circle Line 6

Fun Fact #1: Chiller pipes in the tunnels
While riding along the line, might you have seen chiller pipes within the tunnels? Do you know what the purpose of these pipes are?

4 July 2026 - Cantonment to Prince Edward Road, outer track

4 July 2026 - Cantonment to Prince Edward Road, outer track

4 July 2026 - Cantonment to Prince Edward Road, outer track

From what we know, the reason there are chiller pipes within the tunnels is due to the use of a centralised cooling tower system at Cantonment station. This means that all cooling for the CCL6 stations is performed at Cantonment, with Keppel and Prince Edward Road not having any cooling towers. As cooling is performed at Cantonment, there needed to be a way for the chilled water to be circulated between the 2 neighbouring stations and the centralised cooling towers. The way this was done was to use the main line tunnels to carry the chiller pipes as well.

17 May 2026 - A view of the cooling tower block at Cantonment station.

17 May 2026 - An aerial view of the cooling tower block at Cantonment station.

17 May 2026

Fun Fact #2: Prince Edward Road's original boat theme was intended to materialise differently
We had come across renders and visualisations of the Prince Edward Road where the ceiling of the station was intended to have mimicked a boat's hull. Instead, what we ultimately got was the amenities and services block mimicking the boat's hull instead.

Render of an MRT project in Singapore showing the platform and hull of a boat.
Source: Systra

Render showing a cross section of the station.
Image from Internet.

Fun Fact #3: Other alternative themes were explored for Prince Edward Road
Other renders and visualisations of what we believe is ultimately Prince Edward Road station show other designs that do not incorporate a boat's hull element. It is unclear from the visualisations, though, what the theme was intended to be.

Early visualisations of the Marina Coastal station.
Image from internet.

Early visualisations of the Marina Coastal station.
Image from internet.

Early visualisations of a station.
Image from internet.

Render showing a cross section of the station.
Image from Internet.

Did you learn anything new about the CCL6? Which was your favourite station to visit? Let us know in the comments.