The goal of Zero Waste is to create products that last 500 years, whenever possible.
Thanks to William Shotyk of Edmonton for this tip about BAILEY BRIDGES. These are emergency steel bridges that are made from modular pieces which are piecemeal assembled on a shore and pushed across a ravine or a river. They can span long distances with a bridge that can then accept tanks and heavy trucks in a military operation. They can also be used in many civilian uses. See article in Wikipedia. In the movie A Bridge Too Far you can see British soldiers assembling a Bailey Bridge to replace the bridge that the Germans blew up. Then you see tanks and trucks rumbling across it. This bridge goes a long way toward being designed according to Zero Waste principles.