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When I look at maps of U.S. cities, some interstate routes seem to divide older neighborhoods, while other parts of the same city were left largely untouched. Was that mostly a matter of engineering and available land, or did local politics and the way routes were selected play a larger role?
I’m especially interested in how planners weighed travel time against the effects on residents and businesses. What factors explain why interstate highway routes were built through certain communities, and how did those choices vary from one city to another?
