who knows Moose, I do hope they fix it as your route would be a very nice ride. We only went on the causeway from the south island along it to the "ferry" part (had lunch out there) but its quite pretty and neat going along it. Was quite surprised to see how high the water was up to the causeway bike path level, when we were there last summer the water was a good 3-4 feet lower it seemed than in the photos.

In any case, using the interwebz you will be able to keep track and/or find out who to call to see what progress is being made.