EVER SEEN A RIVER OVER A RIVER?

lilitan008

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If you are not a Physics person, read on and learn a fact of physics.   
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Even after you see it, it is still hard to believe!5.39.217.77; b6 P1 J+ f" @( Q; n& J& {# c
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Magdeburg Water Bridge in Germany  What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! ' _! m& W# ?2 f2 K) v
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.77: _+ M' n7 _6 ?" s& Q) E
It is located in the city of Magdeburg, near Berlin.
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To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
2 f/ {1 d. Y* n% k. j9 vOr just the weight of the water?
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3 T; m6 e% d- ?% o" k' s& y* P5.39.217.77Answer:
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It only needs to be designed to withstand the weight of  the water! ; T% \4 G; Q$ W3 d& q
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
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The Incredible Magdeburg Water Bridge in Germany
0 \% o, U4 [2 _+ a9 A5.39.217.77The Magdeburg Water Bridge is a navigable aqueduct in Germany that connects the Elbe-Havel Canal to the Mittelland Canal and allows ships to cross over the Elbe River. At 918 meters, it is the longest navigable aqueduct in the world.
$ y: T  _/ K+ q; W0 vThe Elbe-Havel and Mittelland canals had previously met near Magdeburg but on opposite sides of the Elbe Ships moving between the two had to make a 12-kilometer detour, descending from the Mittelland Canal through the Rothensee boat lift into the Elbe, then sailing downstream on the river, before entering the Elbe-Havel Canal through Niegripp lock. Low water levels in the Elbe often prevented fully laden canal barges from making this crossing, requiring time-consuming off-loading of cargo.
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Construction of the water link was started as early as in the 1930s but due to the World War 2 and subsequent division of Germany the work remained suspended till 1997. The aqueduct was finally completed and opened to the public in 2003.
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