History is something that we should learn from. It may not be possible to preserve all historical sites. However religion should not be used as a tool to put an impediment too any progressive project which can help the masses. If there is an alternative way of going about the project witout destroying the so called sethu then it should be explored. However if not possible then past should make way for the present. All the problems of mankind are because we try to live our lives as per the past. But only the present is relevant.