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Theme: Earliest known structure made by man, albeit it being made out of just stepping stones, was the first and simplest bridge to mark the continuous evolutionary destiny of humankind. With time, we have grown from those stepping stones to huge, gigantic forms of engineering marvels. A variety of bridges have popped up on the face of the earth, easing lives of the people and nations in variable fashion leading to constant redevelopments and innovations in the bridge engineering, globally.

But, are they indestructible? The mammoth proportions and sheer scale will still come back with a response of a resounding NO! Bridge failures can and have; in the human history; turned into tragedy that, beside money, have cost lives. 

One of the earliest recorded bridge failings was the failing of the Stirling Bridge during the Battle of the Stirling Bridge in 1297. Located in Stirling, Scotland, stone bridge failed because it was overloaded by attackers during the battle and it collapsed completely. Tacoma Narrows Bridge, a suspension bridge in the U.S. state of Washington, failed in 1940 because it was designed poor aerodynamically. This resulted in aeroelastic flutter which practicaly tore up the bridge. Such and even more dangerous collapses have occurred across nations and across types.

Various causes of failure of bridges are overloads, deterioration of material including ageing, natural disasters, design as well as construction aspects and human-made disasters. Infrastructure is the growth driver of the economy. Experience can be an expensive teacher but the best teacher and is necessary to study the past failure to strengthen the future construction. It is essential to conduct bridge health assessment regularly and to provide health evaluation reports so that concerned owners are able to take prompt remedial measures and such failures could be avoided and the damages and losses are minimised.

Though, for thousands of years, man has learnt from his mistakes; it is apparent that he learns constantly with the same recurring idea – Lessons and Remedies!

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