路堤英语:Embankment),香港稱「路壆」,是与“路堑”相对,指公路或铁路、运河建在筑起的高堤上,以避免线路水平面随地形改变。[1]

路堤图示
废弃的西萨默塞特郡矿山铁路英语West Somerset Mineral Railway的路堤。

路堤通常用防水的、不透气、非多孔的材料建设,以避免含水、透水。[2]

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