Transmegapolitan
Is the city obsolete?
In the sense of being the locus of work, life and culture, obviously not. But when it comes to economics, transportation and planning, thinking purely in terms of urban centers and peripheries is often too limiting. Even state or nation level has limits, as financial and vehicular flows very often cross the quaint borders assigned decades or centuries ago. As a result, a growing number of urban analysts are starting to look at a new level: the megalopolis.
The term megalopolis was coined in 1961 by Jean Gottmann, referring to massive agglomerations of population centers across a region; for people in the United States, perhaps the most visible is the "Bowash" corridor stretching from Boston, through New York, and down to Washington, DC. A megalopolis covers multiple metropolitan and "micropolitan" areas, yet has a distinct economic and historical identity. As the Bowash example shows, megalopolises (the awkward plural) need not be within the borders of a single political entity; indeed, urban planners in the European Union are starting to look at cross-national megalopolises in their strategies.
In the United States, Virginia Tech urban studies professor Robert Lang argues (PDF) that there are 10 megalopolises (or, as he refers to them, "megapolitan areas"), with a total population of well over 200 million people -- two-thirds of the US population. Six are east of the continental divide, four are west, and they comprise both familiar regional agglomerations (e.g., "Cascadia," stretching from Portland, Oregon through to Seattle, Washington; "Northeast," something of an expansion of the "Bowash" corridor) and relatively new ones ("1-35 Corridor," from San Antonio and Dallas, Texas to Kansas City, Missouri; "Peninsula," encompassing Tampa through Miami, Florida).