I have no idea if the current NJT/Amtrak tunnels between NJ and NYC are going to fail any time soon, but it seems that there's a nontrivial possibility that they will. I know some transit nerds who cheered when Chris Christie canceled the last tunnel project because they thought it was flawed. It was flawed, a bit, but I never really understood the criticisms. But, here we are, 2015, 5 years later,
and...nada.