Cross Island MRT line: New rail tunnel under nature reserve can be done safely, say experts

Drilling to 70m depth for MRT line will be a first in S'pore, but practice is not uncommon

The Cross Island Line tunnel that will pass under the Central Catchment Nature Reserve will be dug 70m below ground to mitigate the impact on the environment. ST PHOTO: DESMOND FOO
The Cross Island Line tunnel that will pass under the Central Catchment Nature Reserve will be dug 70m below ground to mitigate the impact on the environment. ST PHOTO: DESMOND FOO

Drilling a railway tunnel 70m below ground will be a first in Singapore, but the practice is not uncommon worldwide.

It will come with additional challenges, such as a higher cost, but it can be done safely, tunnelling experts told The Straits Times.

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A version of this article appeared in the print edition of The Straits Times on December 06, 2019, with the headline 'New rail tunnel can be done safely, say experts'. Subscribe