How has the “Polar Vortex” affected your roads?

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It might seem that the extremes of weather – the “polar vortex” freeze in the U.S. and Canada during the winter of 2014, or the triple-digit temp heat waves in the American southwest regions in recent summers – might cause the most damage to asphalt and pavement. But in fact it is the oscillations above and below 32 degrees F (0 degrees C) that are the primary culprit in creating potholes.