Question

Why a bridge are declared unsafe after a long use?

Answer 1

Bridge are declared unsafe after long use because it may grow weak and there are chance of falling of bridge.


MAY IT HELP YOU

Answer 2

because everything has a limited period of time and a validity as we know every product has it mfg and exp date so like this bridge which u are asking about is same as which about bridge here also some materials is used so it gone weak and expiry by day to day life so it is unsafe to use after a long use

I hope this will help you