N.J. Stat. Ann. § 52:32-14

1. A sidewalk hereafter constructed or reconstructed on public or private property for public use within this State, whether constructed by a public agency or a person, firm, corporation, nonprofit corporation, or association, shall be constructed in a manner that will facilitate use by persons with physical disabilities. At points of intersection between pedestrian and motorized lines of travel, and at other points where necessary to avoid abrupt changes in grade, a sidewalk shall slope gradually to street level so as to provide an uninterrupted line of travel.