Sunday, June 2, 2019

Soil Investigation: Maju

The second stage of soil investigation works have commenced on phase 2 of the Cross Island Line (CRL). This involves further testing of areas identified during the first stage in order to obtain a more accurate understanding of the soil consistency. Contact C1066 was awarded by the Land Transport Authority on 12 December 2018 to Kwang Sing Engineering Pte Ltd. The company has previously conducted soil investigation work for portions of phase 1 of the CRL. This contract is due for completion by 24 October 2021.

Contract C1066 detail.
One of the first areas where soil investigation works under this contract has been spotted is opposite Maju camp along Clementi Road. Currently, two soil investigation rigs are located in the forested area.

Friday, April 12, 2019

URA Draft Master Plan 2019 - Potential airport extension

The Urban Redevelopment Authority (URA) launched the Draft Master Plan 2019 (DMP 2019) last month, providing a view of developments to come across the country. As part of the DMP 2019, improvements to various regions were planned and listed out on the URA website for public viewing. Among these regions is Changi, where the upcoming Terminal 5 of the airport is being developed. As part of the plans outlined, improved rapid transit network coverage is one of the key areas being looked into.

An excerpt from the URA website detailing plans for the Changi region.
Source: URA

Monday, April 1, 2019

CRL1 : Pre-qualification for contracts

Last week the Land Transport Authority (LTA) released the tender for pre-qualification of civil contracts for phase 1 of the Cross Island Line (CRL1). The pre-qualification is for 15 civil contracts which involve various types of construction - depot construction, tunnel construction, station construction or a combination of any of the three. Contracts run from CR101 to CR117, skipping any numbers with '4' included - standard practice for LTA contract numbering since the Nicoll Highway incident.

We take a look at the expected contract boundaries for the 15 civil works contracts currently under pre-qualification.

Credit: y2koh

Sunday, March 31, 2019

URA draft master plan 2019 - CRL1 details shown

This past week, the Urban Redevelopment Authority (URA) unveiled the Draft Master Plan 2019 with updated maps of the country. Included in the updates to the maps are the alignment and station outlines of the Cross Island Line stage 1 (CRL1). These show several unique features of the line.

CR02 - Aviation Park
Source: URA draft master plan 2019
The first station along CRL1 is Aviation Park. Due to its proximity to the Changi East depot, this station becomes a diverging point for the main line and depot reception tracks. As a result, it appears that the station will be designed with 4 tracks serving it, although it is likely that two of these tracks may not be used for revenue operations. Noticeable are the cross overs on both sides of the station - to the west between the main line tracks and the outer tracks and another between both bounds of the main line & to the east again between the main line tracks and outer tracks. Looking at the arrangement of tracks and spacing between, it appears that this station may consist of 2 island platforms. 

Additionally on the eastern side beyond the station, the tracks can be seen turning towards the yet-announced Terminal 5 station. On the western end, one can see the tunnels which undercross the existing Changi Airport which run closer together than at other locations - this is set to be one of the two points that utilise a single large diameter bore for tunnel construction instead of the usual two regular diameter bores for each bound.

Tuesday, March 12, 2019

Pre-construction - Teck Ghee

As one of the earliest awarded contracts for station construction, it is likely that works at Teck Ghee station will commence earlier than other station sites along the Cross Island Line stage 1 (CRL1). Now a quiet neighbourhood along Ang Mo Kio Avenue 6, the dual carriageway road will soon make way for heavy construction of both the MRT station and upcoming North South Expressway.

03 September 2018 - A view along Ang Mo Kio Avenue 6 before construction of contract N109A begins.

Thursday, February 28, 2019

CRL1 - What's next?

It has been about a month since the first 12 stations along the first stage of the Cross Island Line have been announced. What comes next as the 10 year journey towards the line's opening commences? We break down some of the things that residents along the route can keep a look out for.

Wednesday, February 27, 2019

CRL2 - Advanced Engineering studies

Today the Land Transport Authority has released the tenders for the advanced engineering studies for the Cross Island Line (CRL) phase 2. Both package A and package B are for the mainline and do not appear to include the advanced engineering for the CRL's western depot at Raffles Country Club.

Screenshot of tenders for Advanced Engineering studies for CRL2

Both contracts are expected to be delivered by 30 September 2022. This is indicative that the announcement of stations along stage 2 of the line will only be announced after completion of these contracts. We have since checked similar contracts for CRL1 and noted that the stations were announced approximately 11 months prior to the completion of the contracts. With this, it can be expected that the CRL2 stations may be announced around end-2021 or in 2022 itself.