High Quality Content by WIKIPEDIA articles! The list of the world`s highest bridges ranks bridges by deck height. The deck height of a bridge is the maximum vertical drop distance from the bridge deck (the road bed of a bridge) down to the ground or water surface beneath the bridge span. Deck height should not be confused with structural height, which measures the maximum vertical distance from the uppermost point of a bridge (e.g. top of the bridge tower) down to the lowest visible point of a bridge, where its piers emerge from the surface of the ground, foundation or water. A separate list of the world`s tallest bridges ranks bridges by structural height.