There are a number of reasons why asphalt edge cracks occur on the pavement.
It can easily find that asphalt edge cracks develop more often on rural roads than they do on main roads, and they are usually symptoms of deeper underlying problems in the pavement. Rural roads are typically much narrower than main roads, so vehicles travelling in opposite directions often have to move closer to the edge of the road when passing one another. If the foundation of the asphalt is weak, thin, or old and has not been properly maintained over the years, then the constant weight and pressure exhibited by cars on the edge—usually larger vehicles, like trucks or tractors—causes the asphalt to degrade a lot faster.
Also, if the roads are not equipped with proper drainage systems, then the water will pool at the side of the road and get beneath the surface, causing the ground to erode. Daily temperature changes and weather patterns can also lead to the formation of asphalt cracks. The cold temperature will cause the asphalt to shrink, and the heat of the sun will cause the road to become brittle and broken. Of course, it will not cause damage overnight. It starts from the surface and may take several years to be evident in the obvious damage. This is why the correct road maintenance is essential, once found out of trouble, it should be asphalt repair.
