Not all parcels have ingress and egress rights; you need to specifically look to your deed as well as your neighbors' deeds for any kind of express grant of a right of way. That being said, there are things you can do to obtain a right of way depending on your situation. Things such as "prescriptive easements"..meaning if you and your predecessors-in-title used that road continuously and openly for a period of time, then you may have established a right of way. Another option might be that your neighbors and your parcel all came from the same original parcel which may entitle you to something called an "easement by necessity" if your state law so allows.
If you purchased title insurance and you were granted an express easement, the title insurance company may be able to appoint counsel for you. However, I'd recommend consulting an attorney in your area. Your deeds/neighboring deeds will need to be reviewed before any true assessment can be made.
DISCLAIMER: Brandy A. Peeples is licensed to practice law in the State of Maryland. This answer is being provided for informational purposes only and the laws of your jurisdiction may differ. This answer based on general legal principles and is not intended for the purpose of providing specific legal advice or opinions. Under no circumstances does this answer constitute the establishment of an attorney-client relationship. For legal advice relating to your specific situation, I strongly urge you to consult with an attorney in your area. NO COMMUNICATIONS WITH ME ARE TO BE CONSTRUED AS ARISING FROM AN ATTORNEY-CLIENT RELATIONSHIP AND NO ATTORNEY-CLIENT RELATIONSHIP WILL BE ESTABLISHED WITH ME UNLESS I HAVE EXPRESSLY AGREED TO UNDERTAKE YOUR REPRESENTATION, WHICH INCLUDES THE EXECUTION OF A WRITTEN AGREEMENT OF RETAINER.
To add to what has already been posted, generally speaking, courts disfavor landlocked properties, so you should consult with a local attorney who can review all of the relevant information.
Also, this is not really a zoning and land use issue, as your potential claim will be redressed through the court and not through your local municipality/zoning hearing boad.