Why do some cracks show up again soon after a mill and overlay?

Unfortunately, mill and overlay projects only address the surface of the pavement. If a pavement has cracks which extend down further than the top 1 to 2 inches of the pavement surface, those cracks tend to show up again after the new pavement is put down. These cracks are called "reflective" cracks and are common after mill and overlay projects. When these cracks appear, we will seal up the cracks so that they do not keep growing and ruin the new pavement.

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1. What is a mill and overlay?
2. When can I drive on the new pavement?
3. Can I get in and out of my driveway while they are milling or paving?
4. Why does the city do mill and overlay projects?
5. Why do some cracks show up again soon after a mill and overlay?
6. Can you mill and overlay any street?
7. How is parking affected by mill and overlay projects?
8. How are mill and overlay projects paid for, and am I assessed for them?
9. Where and when is the city panning