Well this looks fun/deadly. Entered in a competition for a new bridge in Paris, French design studio AZC came up with a novel concept for crossing the Seine, but may have neglected to think of all the ways people will end up wet and/or dead.
Developed with the need for vehicular and pedestrian traffic on the Seine in mind, and looking like something out of Michel Gondry film, the inflatable bridge would be equipped with giant trampolines, allowing people to literally bounce across the river. The 30 meter diameter rings would float in an arch to allow Parisians "to engage on a newer and more playful path... dedicated to the joyful release from gravity". Until some idiot bounces opposite you and sends you over the side.