FYI, because we screwed up and took the wrong road : we went to Louisbourg and upon leaving, looked at the map, noting the Fleur de Lis Trail that goes along the southern part toward the Causeway. Well, let me tell you, the road is AWFUL! It is all patched with huge dips and parts of the road washed out. I don't think it has been paved in at least 30 years. AND....there is no scenery! OMG, what a mistake. We should have gone back to Sydney and gone down the Bras D'Or Trail after leaving Louisbourg. On top of that, there are no services and no place to get gas , etc.
So, take my advice, skip this road. IMO, it shouldn't even be on the map, colored-in as a tourist road. It is a whole lot of nothing through the woods, no water views and is a shame to miss the scenery by going this way..