I love the idea of prominent art pieces appearing to hold up the bridge at each end, that's wonderful but I'm not sure about the arms/fists. Given the winds down by the lake and our long cold winters I think it would be a good move forward to protect the bridge from the elements.
I think AA Duggan's design is interesting BUT those fists should be replaced by some tower design complimenting the adjacent CN tower - perhaps with a twin "Welcome To Toronto" sign. Not bad,though-LI MIKE