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The incredible bridge design that could take Portland into the future »

What would happen if we designed new urban megastructures using the latest scientific information about green design? Portland architect Bill Badrick has the answer. The new Columbia River Crossing bridge, in Portland, Oregon, should be a double-decker, carbon-neutral engineering marvel -- complete with a huge park on top. The best part? It's all possible with current technology. Source Main page (current trends)
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