How to say opposite things simultaneously

This is brilliant. Melbn has a tunnel that goes under the river and a bunch of land, which joins the traffic jams of the East with those of the West. It cost half a billion dollars, and Transurban, the company operating the tunnel, is suing the construction company because the walls are too thin.

But! Get this. In the very same breath, Transurban is saying the tunnel is completely safe!

Let’s review:

Transurban is suing because the tunnel is not built properly.

Transurban says the tunnel is completely safe.

And the government agrees !

Am I missing something here? How can something that’s not built properly be “entirely safe”?