existing one. The city as a whole has suffered.”7 In a 1964 Traffic Quarterly paper, Boston traffic engineer William McGrath—the namesake of a big, bad arterial that runs through Somerville, Massachusetts—casually refers to the work that we do as slum clearance.8 Another 1964 Traffic Quarterly paper then argues that we need to evolve past the “limited concept of slum clearance” and start looking for “blight in non-residential structures.”9 How do we measure nonresidential blight? According to the American Public Health Association, traffic engineers should be on the lookout for a “lack of
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