The Land Transport Authority has awarded a contract of $356 million 3.2 km tunnel.
The cost is $111 million per km.Here are the details of this contract.
https://www.straitstimes.com/singapore/lta-awards-356-million-contract-for-cross-island-line-tunnel-works
The Boring Company started by Elon Musk claim to be able to build a tunnel at $10 million USD per mile. This tunnel has a diameter of 12 feet.
https://www.boringcompany.com/faq
While the size of the tunnel that is needed for 2 tracks of the MRT train is bigger, I wonder if it justify a cost that is 10 times more.
Maybe, we should look at more efficient ways of digging tunnels?
https://tklcloud.com/Feedback/feedback2.aspx?id=4086
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