N.H. Rev. Stat. Ann. § 231:70

In repairing highways no uncovered trench or ditch shall be made by the side of the traveled part thereof, next and opposite to a dwelling house, yard or private way leading into any field, land, or inclosure on the highway unless a way is provided over and across such trench or ditch; nor shall the highway be repaired in any other manner to obstruct the passage to such house, yard, or private way unless a way is provided over and across such obstruction.