That's how it's happening now. There have been thoughts in the past of just submitting all the existing ones out there for approval, so that we bring everything up to date. That would bring the entire process, of course, to a grinding halt. Transport Canada could not possibly deal with all of those at once.
In fact, we've been working with them on a case-by-case basis as they have come up for repair, or rebuild, if that is the case: making them lawful and then proceeding with the repairs.
The problem with that, of course, is that any time a municipality or we wish to in theory, say, replace a guard rail on a bridge or something like that, it may require a multi-month or year delay before we are allowed to do that kind of repair, and there may be cases of public safety in the meantime.