I’ve heard some estimates even higher than the $400 million for demolition cost. But eventually they’ll have to do something. Some estimates for a new (safe) roof are as high as $300 million and in the meantime they are spending millions a year on maintenance just to keep it in its current somewhat decrepit not so useful state.
At some point I think they will have to make the same painful decision they did with Mirabel Airport terminal. Kill it. Not to do so at some point (relatively soon) just stops making sense. Especially with no team as tenant to use it on a regular basis. To do a BC Place type reno would only make sense if somebody is guaranteed to play their games there. To spend that kind of money just in the hopes of attracting a few special events each year would not warrant that kind of renovation expenditure.
It is like the elevated section of Toronto’s Gardiner Expressway. Bite the bullet, demolish the thing before a chunk of concrete kills somebody. I’m sure the land could be used for something that makes more sense in Montreal.