Qingdao Jiaozhou Bay Bridge passes over China's Jiazhou Bay and is one of the longest bridges in the world to run entirely across water.... Spanning a total length of 16.6 miles( approximately 27km) this can be a particularly scary passing for those who have a fear of looking down to the lapping waters below, but visitors can rest assured that it's a strong one. With its longest continuous segment spanning a whopping 16.1 miles or 25. 9km, it's one of the longest bridges in the world, and it he