The following is a list of useful links, as well as a brief description of what each is used for. We cannot verify the validity or originality of these sites, however from our knowledge they seem to be very helpful.
-This is a bridge designing program, which allows you to create original bridges and test their stucture under virtual stress scenarios. The site is also home of a competition that involves creating the most efficient bridge using the program.
-The Tacoma Narrows Bridge, located in Washington state, was a devastating demonstration of how the forces on a bridge can overwhelm the structure causing catastrophe