How possible is a North-South Island tunnel?
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The idea of a tunnel linking the North and South Island has got people talking.
While we know how well the channel tunnel linking Britain and France works, the idea of a tunnel between Wellington Airport and Picton would be nearly twice the length.
With the challenging conditions in the strait, is it possible?
Grant McLachlan is an environmental and infrastructure specialist and he believes it can be done.
He told Larry Williams that there are a number of options, though it will be expensive.
“A train only tunnel, 66 kilometres, that would possibly be costing about $15 billion.”
He has been thinking about the idea for around 20 years, and is excited for the prospect.