Why highways alternate materials on the pavement?

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Was on the NJ parkway and was wondering, why it’s not smooth. The roads pavement kept alternating between a smooth asphalt to a rougher substance, probably concrete. Maybe I’m using the wrong term but I’m curious.

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Anonymous 0 Comments

Asphalt is commonly used to patch over damaged sections of concrete roads. Up north this happens more often because the freeze/thaw cycle is really hard on them. I suspect that’s what you’re seeing

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