Any class III public road which leads primarily to a private recreational area shall be maintained by the owner or operator of such area to the satisfaction of the commissioner of transportation, unless otherwise specifically provided.
N.H. Rev. Stat. Ann. § 233:9
Class III Public Roads to Private Recreational Areas
Source
Official source: New Hampshire General Court. Reproduced from public-domain New Hampshire statutes; confirm against the official source for the current text. Not legal advice.