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As Tom Frank walks down the shoulder of an oceanside highway in Carlsbad, California, he finds signs everywhere that this stretch of iconic highway will not last as it is much longer.
The sandy bluffs underneath roadside parking lots have completely given way in some spots, sending slabs of asphalt tumbling over the cliffs and leaving hollowed-out voids under the remaining pavement. Fences keep visitors from getting too close. But there are other “hot spots” where erosion has exposed abandoned drain ...