Bridge Lighting: Division of Labor Between Structural Lines and Driving Safety

A night view of a large-span bridge, where lighting is clearly divided into two systems. Safety lighting: streetlights on the bridge deck are arranged at fixed intervals, with light heads facing downwards, illuminating only the roadway and sidewalks. Light spots are continuous and uniform on the bridge deck, not spilling outside the bridge. Expressive lighting: the main towers and cables are illuminated by independent narrow-angle floodlights, with light following the structural lines. The cables appear as a set of glowing fine lines, and the mass of the main towers is given a three-dimensional effect by upward-facing light. The color temperatures of the two systems are different—the bridge deck is warm white, and the structure is cool white—visually separating them clearly. The water surface below the bridge reflects the structural light. Avoid: allowing the two systems to blend into one, uniformly illuminating the entire bridge, using colored chasing lights, allowing streetlight beams to shoot towards the sky.

Translated from Chinese by AI.

夜間的大跨距橋樑,照明明確分為兩套系統。安全照明:橋面的路燈以固定間距排列,燈頭朝下,只照亮車道與人行道,光斑在橋面上連續而均勻,不溢散到橋外。表現照明:主塔與纜索被獨立的窄角投光燈照亮,光沿著結構的線條走,纜索呈現為一組發光的細線,主塔的量體被由下往上的光打出立體感。兩套系統的色溫不同——橋面偏暖白,結構偏冷白——在視覺上清楚分離。橋下的水面映出結構的光。避免:讓兩套系統混為一體、把整座橋均勻打亮、使用彩色跑燈、讓路燈的光射向天空。