[Rune Son of Bjarne]

I don't know much about throwing down bridges, which is weird as it is what we Danes do best. . . but I have read about several cases where massive bridges was thrown down relatively quickly. Now this is a wooden bridge, this definitly is an advantage if you want to throw it down, but we have a hughe problem. . . We cannot know how the bridge was cunstructed, the fact that there is a lot of pillars tells us nothing of how strong the bridge was.

Burning bridges on the other hand, at that I am an expert!

About Smaug landing on the docking area or whatever it is between the houses and the water: Indeed it looks like there is plenty of space at the part closest to us, but if you look where it is level with the bridge it is actually quite difficult to say how broad any of the things is.

To reach a final conclution on this matter we really need to know about Smaug and Lake Towns siezes and Smaugs flying abilities.