I have been watching the same kind of thing here. An interchange where one highway meets another and one lane goes into the city and another heads out towards Bedford (where we have one house) and then beyond to the airport. The interchange has been in place since before cars were invented, so the upgrade has been in need forever, or longer. It was a nightmare with the rapid increase in Halifax population in recent years.
Very intersting to watch the snail pace progress ... being NS everything is ssssslllllooooowwww. An engineering marvel though, which I hope is finished in my lifetime.