Alligator cracks are very common on asphalt surfaces. Alligator cracks are common because they can be caused by a number of things such as moisture in the asphalt, temperature changes, poor construction, and heavy loads. A great way to prevent alligator cracks is by getting regular maintenance inspections by a professional; however, you can’t always prevent alligator cracks. There are two methods to fixing alligator cracks which are patching them or filling them. Patching alligator cracks means that you would take out the cracked area and replace it with new asphalt. Filling alligator cracks means you would just fill in the cracks with a sealant.