N.J. Stat. § 27:7-21.3
Where the route of a State highway has heretofore or hereafter been fixed and mapped by the State Highway Commissioner, he shall be deemed to have vacated any parts thereof not included in the highway as so mapped, pursuant to the power conferred upon the State Highway Commissioner in respect to the vacation of any State highway or part thereof as provided by section 27:7-21 of the Revised Statutes but nothing herein shall be deemed or construed to vacate any of said parts title to which has been acquired by the commissioner by purchase or condemnation. Upon the request of any interested person and the payment to the State Highway Commissioner of a fee of $5.00 for the use of the State, the State Highway Commissioner shall certify the fact of such vacation.
N.J.S. § 27:7-21.3