So the road expands and shrinks as it heats and cools. This cycle, along with a metric boatload of traffic, creates weak points in the road that eventually result in cracks. Once the cracks form, water can get inside them. In the summer it’s not a big deal, but in the winter the water freezes and expands, which then significantly weakens sections of the road. Then the plows come over and are basically applying a literal truckload of force on the road, and if you hit a section that’s weak and not well aligned with the rest of the road it just knocks the whole section out of the road.
Latest Answers