List of highest bridges
Introduction This '''list of highest bridges''' includes bridges with a deck height of at least . The  of a bridge is the maximum vertical drop distance between the bridge deck (the road, rail or other transport bed of a bridge) and the ground or water surface beneath the bridge span.Deck height is different from , which is a measure of the maximum vertical distance from the uppermost part of a bridge, such as the top of a bridge tower to the lowermost exposed part of the bridge, where its piers emerge from the surface of the ground or water.==Structural height and deck height== The Millau ViaductThe difference between tall and high bridges can be explained in part because some of the highest bridges span the deepest part of their valley or gorge supported from above, with their ground supports built on relatively high terrain only; some of the tallest bridges have support structures on the lowest part of the valley floor.For example, (as of 8 February 2020) the Duge Bridge is the highest bridge in the world, but only the tenth tallest. This bridge spans a deep river gorge. The bridge's two towers, built on the rims of the gorge, are  tall, but due to the depth of the river gorge between the towers, the deck height of the Duge Bridge is .The Millau Viaduct is a cable-stayed bridge that is both tall (in structural height) and high (in deck height). The tallest Millau Viaduct tower is situated near the valley floor, which gives the viaduct a structural height of , and a deck height of  above the valley floor. The Millau Viaduct is (as of 8 February 2020) the tallest bridge, but only the twenty-sixth highest bridge in the world.
Completed bridges The ranking of the highest bridges in the world, currently open for use. Only bridges with a height of  or greater are included. Bridges under construction or demolished are not included in this ranking, but see the separate section "Under construction" below.
Under construction The list below includes the highest bridges in the world currently under construction. Only bridges with a height of 200 metres (660 ft) or greater are included. Name Height (metres / feet) Span(metres / feet) Expectedcompletion Carries Design Location  Puzhehei Bridge      2024  Expressway  Cable-stayed  Shedexiang, Yunnan,  Zhaozhuang Bridge|2022RoadRailwayXingyi Metro line 1Arch''Maling River''Xingyi, GuizhouLancangjiang River Railway Bridge|2022RailwayArch''Mekong''Baoshan, YunnanDahe Bridge六盘水大河特大桥|2023RoadSuspensionLiupanshui, GuizhouJinshajiang Railway Bridge Hutiaoxia虎跳峡金沙江特大桥|2022RailwaySuspension''Jinsha River''Hutiaoxiazhen, YunnanWujiang Bridge Zunyu遵余高速乌江特大桥|2021RoadZunyu ExpySuspension''Wu River''Meitan County, GuizhouMalinghe Bridge Three马岭河大桥|2021RoadRailwayXingyi Metro line 4Suspension''Maling River''Xingyi, GuizhouYuanjiang Railway Bridge元江大桥|2021RailwayTruss''Red River''Yuanjiang, YunnanMtentu Bridge|2022RoadN2 roadBeam''Mtentu''Lundini, Eastern CapeNujiang Railway Bridge Darui怒江特大桥|2022RailwayDali–Ruili RailwayArch''Salween River''Lamengxiang, YunnanGasajiang Bridge嘎洒江特大桥|2021RoadYuxi-Lincang ExpyBeam''Red River''Jiasazhen, Yunnan
Timeline The list below shows the historical progression of the highest bridge in the world. Name Record Location Height (metres / feet) Mainspan(metres / feet) Year opened Carries Duge Bridge 2016–  near Liupanshui in Guizhou   2016 G56 Sidu River Bridge 2009–16  Yesanguanzhen 496 m/1,627 ft 900 m/2,952 ft 2009 G50 Hegigio Gorge Pipeline Bridge 2005–09  Otoma, Papua New Guinea 393 m/1,289 ft 470 m/1,542 ft 2005 pipeline Beipan River Guanxing Highway Bridge 2003–05  Xingbeizhen 366 m/1,200 ft 388 m/1,273 ft 2003 highway Liuguanghe Bridge 2001–03  Liu Guangzhen 297 m/975 ft 240 m/787 ft 2001 G321 Royal Gorge Bridge 1929–2001  Cañon City, Colorado 291 m/955 ft 286 m/938 ft 1929 road  1922–29  Niouc 190 m/623 ft 190 m/623 ft 1922 pipeline Sidi M'Cid Bridge 1912–22  Constantine, Algeria 175 m/575 ft 160 m/525 ft 1912 road  1839–1912  Allonzier-la-Caille 147 m/482 ft 183 m/600 ft 1839 pedestrian Puente Nuevo 1751–1839  Ronda 120 m/394 ft 100 m/328 ft 1793 road  1350–1751  Spoleto 80 m/262 ft 1350 Aqueduct Alcántara Bridge 106–1350  Alcántara 48 m/157 ft 29 m/95 ft 106 Roman bridge Pont d'Aël 3 BC – 106  Aymavilles 66 m/217 ft 14 m/46 ft 3 BC Roman aqueduct
Notes
References * ''HighestBridges.com'', Sakowski, Eric (Wiki)* Others references