Canal Bridge Magdeburg
A photo of a "water bridge" is circulating around, accompanied by this caption:
Water Bridge in Germany.... What a feat! Six years, 500 million euros, 918 meters long.......now this is engineering! This is a channel-bridge over the River Elbe and joins the former East and West Germany, as part of the unification project. It is located in the city of Magdeburg, near Berlin. The photo was taken on the day of inauguration. To those who appreciate engineering projects.....
No, the picture hasn't been photoshopped. It's a real water bridge
. Amazingly, the information in the accompanying caption is also correct. It is 918 meters long, and it did cost over half-a-billion euros to construct. (thanks to Dipankar for sending the photo)
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However, I'm at a loss to come up with some reason they might need such a thing.
Are you sure this is real, Alex?
It seems that they wanted to link together two shipping canals.
There are also elevators to take ships to a canal at a higher level:
I gathered that from the first article, but what I don't understand is why they couldn't just dig a 1-km-long ditch between the two canals, instead of building a (presumably much more difficult and expensive) "water bridge."
Since the aquaduct (water bridge) crosses the river Elbe, I can think of two reasons.
A) The canals connected are at a higher level than the river Elbe.
B) The canal-system is made separate from the river Elbe to ensure a constant water mark (water height) and a reliable transport route.
As you can read on http://www.dw-world.de/dw/article/0,,990878,00.html : "The water bridge will enable river barges to avoid a lengthy and sometimes unreliable passage along the Elbe. Shipping can often come to a halt on the stretch if the river
Well, some of them do, but I believe the Elbe and the other rivers mentioned in this news story run north to the Baltic Sea.
I've never been good at topography. 🙄 Anyway, regardless where the Elbe runs to, it has the problem the water sometimes gets to low for ships. So ...
having said that, this one looks a damn site bigger and wider than those. What sort of cumec capacity doe sit have? Anyone know?