Land Transport Authority

Cross Island Line


Spanning Singapore, the Cross Island Line (CRL) will be about 50km in length and is targeted to complete around 2030. 


Cross Island Line Map

Starting from Changi, the CRL will pass through Loyang, Pasir Ris, Hougang and Ang Mo Kio before reaching Sin Ming. Continuing westwards, it will serve areas including Bukit Timah, Clementi, and the West Coast before terminating at the Jurong Industrial Estate.

The Government is currently studying two underground alignments in the vicinity of Central Catchment Nature Reserve (CCNR):

i) Direct alignment

- 2km tunnel below the CCNR

- Approximately 40m deep

- No physical structure on the surface level

ii) Skirting alignment

- 9km under homes and businesses

- Supporting ventilation facilities on the surface level

No decision has been made on which of the two alignments to pursue. This is the first time such an Environmental Impact Assessment (EIA) is carried out for rail development because the Government is concerned about preserving nature and protecting the CCNR. Our extensive consultations with the nature groups have been very helpful, and we have taken on board many of their suggestions. Much care has also been taken to locate the works in areas that are less sensitive to biodiversity as much as possible. None of the surface vegetation will be affected as there is no need to clear any trees or branches.

If the alignment underneath the CCNR is chosen, construction of the MRT tunnel will be underground tunnelling from outside the nature reserve, and there will be no structures on the surface level of the CCNR. For the alignment which skirts outside the CCNR, underground MRT tunnels will go under homes, businesses and buildings.

The Government will consider the views from all stakeholders before deciding on the final CRL alignment. Apart from environmental impact, the decision on the final CRL alignment will also take into account the need to maximise benefits to commuters and minimising impact to residents and businesses, the need for land acquisition, and costs to taxpayers.

Source: The Sunday Times © Singapore Press Holdings Limited. Permission required for reproduction.

Press Release: LTA Gazettes Environmental Impact Assessment (Phase 1) for Cross Island Line

Click below to read the Final Site Investigation Environmental Impact Assessment reports:

How will commuters benefit from the Cross Island Line?

The CRL will give commuters an alternative  to the existing East-West Line for east-west travel, in greater comfort and in significantly shorter journey times. The eastern leg of the CRL will also include a segment that extends into the centre of Punggol. Residents in Punggol will be able to travel directly to Pasir Ris—a popular travel route—in only 10-15 minutes, compared to a 40-minute bus journey today.