The Internet Backbone and the American Metropolis

Despite the rapid growth of advanced telecommunications services, there is a lack of knowledge about the geographic diffusion of these new technologies. The Internet presents an important challenge to communications researchers, as it threatens to redeŽ ne the production and delivery of vital services including Ž nance, retailing, and education. This article seeks to address the gap in the current literature by analyzing the development of Internet backbone networks in the United States between 1997 and 1999. We focus upon the intermetropolitan links that have provided transcontinental data transport services since the demise of the federally subsidized networks deployed in the 1970s and 1980s. We Ž nd that a select group of seven highly interconnected metropolitan areas consistently dominated the geography of national data networks, despite massive investment in this infrastructure over the study period. Furthermore, while prosperous and internationally oriented American cities lead the nation in adopting and deploying Internet technologies, interior regions and economically distressed cities have failed to keep up. As information-based industries and services account for an increasing share of economic activity, this evidence suggests that the Internet may aggravate the economicdisparities among regions, rather than level them. Although the capacity of the backbone system has slowly diffused throughout themetropolitan system, the geographic structure of interconnecting links has changed little. Finally, the continued persistence of the metropolis as the center for telecommunica-