This is cool, but Ficus anything is not Ficus carica. That fig grows in the rain forest but does not bear the fruit we all love. I doubt the Carica roots would make a bridge! Still a cool video! There are a lot of Ficus varieties, but they don't all bear fruit. I do think you could bend a Ficus Carica tree into a fence or a chair, but doubtful a bridge... well maybe, if you plan to live 500 years.
Suzi