Describir: Bridges and how they are built /

           _    _     _  _     _____               ______    _____     ______  
    ___   | || | ||  | \| ||  |  ___||     ___    /_   _//  |__  //   /_   _// 
   /   || | || | ||  |  ' ||  | ||__      /   ||   -| ||-     / //     -| ||-  
  | [] || | \\_/ ||  | .  ||  | ||__     | [] ||   _| ||_    / //__    _| ||_  
   \__ ||  \____//   |_|\_||  |_____||    \__ ||  /_____//  /_____||  /_____// 
    -|_||   `---`    `-` -`   `-----`      -|_||  `-----`   `-----`   `-----`  
     `-`                                    `-`