I own property on a road considered to be private but its history is somewhat uncertain.  My neighbors and I have been trying to answer that very question for seven years but are still unable to establish a definitive answer.  However, I will argue that it really doesn't matter unless someone stands up and can establish ownership (paying taxes on the land for instance). What is more important is who has interest in the road or right of way, and who is (legally) allowed to establish a road association, take control of the road/row and to what extent.  On our road(s), this is a horror show unfortunately.  I hope your situation is more tenable.  

Thanks for your help