Many of our transportation systems are still being designed and managed for an era that is quickly passing, write Associate Professor Mikhail Chester and Professor Brad Allenby, who teach in the Fulton Schools civil, environmental and sustainable engineering program.  Chester also directs the Metis Center for Infrastructure and Sustainable Engineering.  What’s needed, they say, are new paradigms that go beyond the frameworks of transportation systems of a now bygone industrial age. To meet 21^st century needs, infrastructure must be agile and flexible, able to adapt to rapidly accelerating technological evolution as well as changes to the natural environment — especially climate change, but also geological and ecological shifts. Allenby and Chester’s article is in a publication of the Pacific Southwest Region University Transportation Center, a network of eight partner universities in Arizona, California and Hawaii.