N.J. Stat. § 27:25A-27
Before taking over any existing public highway as a feeder road, the authority shall obtain the consent of any entities then exercising jurisdiction over the highway, which are authorized to give this consent by resolution, ordinance or other appropriate written instrument of its governing body. Each feeder road or section thereof acquired or constructed, or public highway taken over from these entities as a feeder road, in connection with an expressway project by the authority shall for all purposes of this act be deemed to constitute part of the project, except that the authority may turn back to the entities any public highway taken over as a feeder road from the entities or any feeder road or section thereof constructed upon a new alignment in substitution for the previous alignment of a public highway so taken over unless 80% or more of the feeder road or section is constructed upon a new alignment.
N.J.S. § 27:25A-27