c1_Haa2000_Gravestenenbrug

The good thing about a double lift bridge is that each counter
balance can be adjusted and will not, like a single lift, bear down
so much on its foundations. Then by increasing its size a double
lift can be made to span wider spaces.



The good thing about a double lift bridge is that each counter balance can be adjusted and will not, like a single lift, bear down so much on its foundations. Then by increasing its size a double lift can be made to span wider spaces.
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