The stone arch bridge is a rather novel structure in the line of bridges. At a glance, it seems almost impossible that an arch, made of many discrete stones, could possibly stand, let alone support weight, yet that they do is entirely undeniable. Compression One more picturesque explanation of why an arch stands is that two columns of falling stones are “falling” into each other and hence can’t fall all the way. A more scientific explanation of the reason why arches not only stand, but hold … [Read more...] about How a Stone Arch Bridge Supports Weight