Path/road

Respected Sir, 15 years back we 10 families of our village unitedly constructed a Mud Road for the benefit of our village people as well as for the Agricultural Purpose by contributing small part of our own private lands.As village panchayat was never interfere in construction of this road ,Still this road identified as private road only.But since 15 year all families of our village and farmers are gained huge benefit from this Road. But Now one person of our village who contributed his land too for making road, planing to block the road and he is subsequently blackmailing the village people by saying "He is going to block the road in his land where he contributed for making Road" Respected Sir Even though the road is identified as Private road the beneficiaries of the road are Many families and farmers.Farmers are very much affected if that road would have been blocked.Even many elders,Housewives,School childrens too. Now my Questions are, 1.Whether 15 year old road which was used by public can be blocked by One person? 2.If in case he blocks the road what legal action we village people can take? we should approach police station or civil court?