RSA 231:109: Liability of Persons for Damages on Bridges, Culverts, and Embankments.

Any person or corporation, except municipal corporations, through whose negligence or carelessness any obstruction, defect, insufficiency, or want of repair is caused upon any highway, shall be liable to any person injured by reason thereof, and the damages may be recovered in an action on the case; provided that this subdivision shall not enlarge the common law liability of public officers.