Sep 22, 2026 · 24 min · 8 segments
Another delay to the construction of the North-South Corridor means two more years of dust, noise and disruption for affected residents, businesses and pedestrians. For an engineering project of this…
David NgGuest
Steven ChiaHost
Alvin LinGuest
Well, for this knock-stop corridor, I would say that it is more complex than the previously constructed KPE in the sense that because it has to traverse through more difficult ground conditions.

And when you go further north, it's also, again, it's a very hard rock condition that they're encountering.

And plus that the corridor that the construction is being carried out is along the existing road, which makes it doubly challenging because that means that they have to do the work slower because they need to first divert the traffic first and let the traffic flow before they can do work in the available space.

Imagine there's already an existing road and then you're actually constructing another layer of underground road beneath the existing road.

So you're going to split it to many, many small roads, creating some small spaces for the construction to be carried out.

So one would have thought they would have planned and anticipated all those challenges.

So definitely all this construction sequence has been planned for before you actually went into the actual construction, before you actually create the disruption that it has to, right, to construct it.

Well, for this knock-stop corridor, I would say that it is more complex than the previously constructed KPE in the sense that because it has to traverse through more difficult ground conditions.

And when you go further north, it's also, again, it's a very hard rock condition that they're encountering.

And plus that the corridor that the construction is being carried out is along the existing road, which makes it doubly challenging because that means that they have to do the work slower because they need to first divert the traffic first and let the traffic flow before they can do work in the available space.

Imagine there's already an existing road and then you're actually constructing another layer of underground road beneath the existing road.

So you're going to split it to many, many small roads, creating some small spaces for the construction to be carried out.

So one would have thought they would have planned and anticipated all those challenges.

So definitely all this construction sequence has been planned for before you actually went into the actual construction, before you actually create the disruption that it has to, right, to construct it.
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