Leonardo da Vinci was an Italian painter, sculptor, architect, musician, scientist, mathematician, engineer, inventor, anatomist, geologist, botanist and writer. Leonardo has often been described as the archetype of the Renaissance man, a man whose unquenchable curiosity was equaled only by his powers of invention. He is widely considered to be one of the greatest painters of all time and perhaps the most diversely talented person ever to have lived.
Leonardo was revered for his technological ingenuity. He conceptualized, among many others, a helicopter, a tank, a paddleboat, a self-propelling cart, concentrated solar power, a calculator, the double hull and outlined a rudimentary theory of plate tectonics. Relatively few of his designs were constructed or were even feasible during his lifetime, but some of his smaller inventions, such as an automated bobbin winder and a machine for testing the tensile strength of wire, entered the world of manufacturing unheralded. As a scientist, he greatly advanced the state of knowledge in the fields of anatomy, civil engineering, optics, and hydrodynamics.
Da Vinci designed this bridge to use its own weight to support itself without the use of fasteners or other forms of attachment. In fact more weight makes the bridge stronger. Designed for military applications and fast assembly many similar principles are still in use in bridge building today.