420m-long undersea tunnel to be built by year-end

A 420m undersea tunnel for motorists - the first of its kind here - will be completed by the end of this year.

The first stage of the tunnel, which dives 20m under the sea, has been successfully built.

It is part of the 5km-long Marina Coastal Expressway, which is on track for completion by the end of next year, promising motorists a smoother ride to the Marina Bay area.

With a price tag of $4.3 billion, it is the most expensive expressway built here in terms of cost per kilometre.

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