A spaghetti bridge is an architectural model of a bridge, made of uncooked spaghetti or other hard, dry, straight noodles. Bridges are constructed for both educational experiments and competitions. The aim is usually to construct a bridge with a specific quantity of materials over a specific span, that can sustain a load. In competitions, the bridge that can hold the greatest load for a short period of time wins the contest. There are many contests around the world, usually held by schools and colleges.