What causes potholes?

Potholes occur as the result of melting ice and snow. The melting water drains under the pavement through cracks caused by traffic. As the temperatures begin freezing at night, the water becomes ice and expands under the pavement, forcing the pavement to lift. As traffic continues to drive over this section of road and the temperatures rise above freezing, a shallow divot occurs under the road and the pavement breaks. A pothole is formed as a result.

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1. Where does the Road Commission get its operating funds?
2. Why do you spread tar and stone on roads that are already paved?
3. Why is my road not plowed right away when it snows?
4. Your truck knocked down my mailbox - when are you going to fix it?
5. Why are there rules about the types of mailboxes and posts people can have?
6. My vehicle was damaged due to the condition of a road - is the Road Commission going to pay for it?
7. Where can I get information on current Travel information in Michigan?
8. Why are some roads numbered differently than others?
9. Is the Monroe County Road Commission responsible for state highways?
10. What are weight restrictions?
11. People are speeding on our road. How do I get the speed limit lowered?
12. My neighbors and I think we should have a traffic light at our corner. If I get enough signatures, can we have one?
13. I want to plant some trees along the road. Is that OK?
14. Do I need to get a permit to put in a new driveway?
15. I live on a gravel road, and I can't leave my windows open because of the dust - what are you going to do about it?
16. The gravel road I live on is full of holes - when are you going to grade it?
17. What causes potholes?