Sharraxaadda

We have a town sewer drain cover in the middle of our front driveway/parking area that has sunk over the course the winter. A ring of cracked/sunken asphalt is around it resulting in a large dip in the driveway/parking area that residents hit each time they pull in and out of driveway. We are concerned that this will continue to sink resulting further damage to our driveway/parking area and possibly damage to vehicles. We would like to see this fixed before more damage occurs.