Sharraxaadda

This is in front of mailbox. I never had this issue until Mass Farm Road was built. I had asked the contractor to fix it and after much discussion he agreed. He filled it with crushed stone. The problem is the water run off pushes the stone down the hill. The DPW was tarring one day and they filled it in and covered it. Now, with the new street we have the same issue. It is getting deeper..
Thank You