What are some really interesting facts about bridges?

Answer by Prasoon Verma:

Have you heard about Howrah Bridge, Kolkata?
YES..
Have you ever imagined how many nuts & bolts were used to make this mega structure stand?
Not a single one!!! (Yes, you are reading it correct)
This 26,500 plus mega tonne of high-tensile steel made bridge is standing over river Hooghly since 1943. Technically its a "Steel Truss Cantilever" bridge constructed entirely by riveting, without nuts or bolts! It stands 6th among world's longest cantilever bridges. A daily traffic of approximately 100,000 vehicles and possibly more than 150,000 pedestrians, easily makes it the busiest cantilever bridge in the world.

What are some really interesting facts about bridges?

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