A couple years ago, we removed a major willow fork that had fallen across a new elaborate deck/bridge that was the only foot access to the client's house. The remainder had considerable decay, a bee's nest, and lots of (all one sided) weight over the stream the other direction. We discussed removing the rest of the tree, but no action had been taken. A few weeks later, it too fell. I may have considered a portable manlift, as the soft lawn could have handled the weight. Just glad I didnt try to climb and rig it out, as it was sure a poor structured tree. At least the second part did no damage. Just a lot of work to pull out of the stream.