A damaged flowline can allow water to create a void of material underneath the Asphalt, in effect leaving a bridge. Asphalt is not meant to act as a bridge and is only as strong as the foundation beneath it. It requires an effective sub-base and sub-grade to support its weight-bearing traffic. When the foundation beneath asphalt is compromised, the surface is destined for issues like potholes and alligator cracking. These are typical causes for expensive removal and replacement costs.