Describir: Bridges and how they are built /

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