The Canso Causeway is another engineering "feat" that caused significant environmenal change, gnu. I was there at the opening in 1955 and remember bits and pieces from that day. I was 8 years old at the time. The marine ecology from the Causeway to the Gut between Isle Madame (where I grew up) and Canso changed significantly since then. There was a proposal not so long ago to replace the causeway by a bridge. I don't know how serious the proposal was (I've been in Alberta for over 30 years and only heard part of that story) but I suspect the high costs of such a proposal will forever be the argument against proceeding. Congratulations on being there to witness the continuing recover of the Petitcodiac