This is a phobia that is characterized by an intense fear of crossing bridges. It can cause a person to experience intense anxiety and panic when they are faced with the prospect of crossing a bridge. Symptoms may include sweating, shaking, difficulty breathing, and an increased heart rate. People with this
From Wikipedia
Gephyrophobia is the anxiety disorder or specific phobia characterized by the fear of bridges and tunnels, especially those that are older. As a result, sufferers of gephyrophobia may avoid routes that will take them over bridges, or if they are a passenger, will act very apprehensively when passing over a bridge. The term gephyrophobia comes from the Greek γέφυρα (gephura), meaning "bridge", and φόβος (phobos), meaning "fear".