From Fear of .net
Fear of Bridges Phobia – Gephyrophobia
Gephyrophobia (pronounced as Jeff-ee-ro-pho-bia) is a common specific phobia affecting many individuals. People with this phobia are afraid of crossing bridges or tunnels: driving over a bridge or even seeing one from afar or seeing photos/movies involving bridges can set off an anxiety attack in the sufferer.
This is a pretty cool site about phobias. From the top 100 phobias to anxiety tests, to “cure” your fear.