Bridges are miracles of architecture, human creativity. After all, there's a whole category dedicated to photographs of them here on dA. Every one of them is unique, fitted to the surrounding landscape, the available resources, and its supposed utilisation. They require most complex statical calculations, must be stable at strong winds, high temperatures and heavy load.
So when a bridge has stood firm for years, for summers and winters, with much and with little traffic, has thoroughly proved the quality of its construction, why just tear it down all of a sudden? Bridges are usually only destroyed at war, to hinder the hostile faction's adva