The
list of the world's tallest bridges ranks bridges around the world by the height of their structure. The
structural height of a bridge is the maximum vertical distance from the uppermost point of a bridge, such as the top of a bridge tower in a suspension bridge, down to the lowest visible point of a bridge, where its piers emerge from the surface of the ground or water. Structural height should not be confused with
deck height, which measures 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. A separate
list of the world's highest bridges ranks bridges by deck height.