I think you should speak with an attorney who works with eminent domain cases. It sounds like that is what is going on with your property. I went to law school with a gentleman who does this work, his name is David Murray and he's with The Odom Firm, PLLC in Charlotte. I'd call him. Tell him I say hello if you talk to him.
This information is for educational purposes only and is not intended to form a client/lawyer relationship.
You need to contact a lawyer that handled eminent domain to see if you can negotiate/move the road, etc. The lawyer will pull the plans and the talk to NCDOT and see if the taking will have to go through and the amount of compensation.