Aerial View the Third Largest Viaduct in the World鸟瞰赤石大桥

Chishi bridge, tower 287m tall, each span 380m,total length more than 1400m, is the third largest viaduct in the world,only behind Pingtang bridge:
http://www.highestbridges.com/wiki/index.php?title=Pingtang_Bridge
and Millau bridge:
http://www.highestbridges.com/wiki/index.php?title=Millau_Viaduct
Chishi bridge's introduction:
http://www.highestbridges.com/wiki/index.php?title=Chishi_Bridge

It is very difficult to compare Pingtang bridge and Millau viaduct. Between these 2 bridges,Millau has 3 advantanges:

1,It's main tower 343m tall(some resource said 333m tall),is the tallest bridge tower in the world,slightly taller than Pingtang's 328m tower.
2,It has 7 towers with 6 span,total length more than 2400m+,longer than Pingtang bridge's 3 towers 2 span 2100m+.
3,It's tower and beam all special designed looks delicate.

But Pingtang bridge also has some advantanges:

1,It's deck high from water at least 310m , much higher than Millau's 277m.In fact it's the first super high and super tall bridge.(tower and deck high all surpass 1000 feet.)
2,It has each span 550 meters,much larger than Millau's 342m span.
3,It's 3 main towers average tall more than 310 meters.
4, Precipitous cliff aroud Caoduhe gorge(which Pingtang bridge cross) and peculiar limestone peaks near the bridge much beautiful than Millau viaduct area.

After all,becouse Millau viaduct's main tower only slightly taller than Pingtang bridge's,it's total length also not much longer than Pingtang bridge, and Pingtang bridge's tower also has special design,only the beam is straight. But Pingtang bridge's deck high, each span length and average tower tall all much larger than Millau viaduct. So I think Pingtang bridge's scale is slightly larger than Millau viaduct , also more beautiful than it. After all,these 2 bridges are all much larger than Chishi bridge.

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