Kudos to the Pennsylvania Department of Transportation for constructing a temporary replacement for a collapsed overpass in just 12 days, something that many predicted would take months. The replacement is just six lanes wide rather than the eight on the original overpass, but that leaves room for the department to construct a permanent replacement.
Some people are drawing the wrong lessons from the response to the highway collapse, however. According to Joe Cortright, the fact that there was no “carmageddon” during the 12 days the highway was closed proves that we don’t need highways at all. According to what Cortright calls the “science of ‘induced demand,'” building new roads simply leads to more driving and, conversely, closing roads leads to “traffic evaporation.” Continue reading
