Usually, the appearance of the water bridge becomes the result of laying water channels for navigation at a different height than the rivers. At the same channel as the channel intersects the river is used for navigation. Next to water bridge, as a rule, it is sudopodёmnik or lock to move the courts of the canal or river.
Europe's longest water bridge is in the German city of Magdeburg - Magdeburg Water Bridge. It has a length of 918 meters, it is built of 24 000 tonnes of steel and 68,000 cubic meters of concrete.