It is indeed a great book. I have listened to it on the unabridged audio CD version on a long car trip. The unique Roeblings, the political machinations neccessary for funding, and particularly the well-described netherworld of the work in the caissons before the science of barometric compression in man was known (I imagine this is particularly cringe-inducing after your brush with the bends, Phil)– It all makes for an enjoyable read or listen.

Also the fact that such a permanent structure in some absolute part is standing on wood seems just fantastic to me.