N.J. Stat. § 40:37-146.2
Whenever a tract of land not exceeding 2 acres and comprised within the established limits of any one county park under the supervision and control of a county park commission operating under sections 40:37-96 to 40:37-174, inclusive, of the Revised Statutes shall have been separated from the main body of such park as a result of the construction of a county or state highway, it shall be lawful for such county park commission upon its determination that such tract is no longer adaptable to park use by reason of such separation from the main body of the park, to sell the same by public sale to the highest bidder after public advertisement thereof in a newspaper circulating in the county, provided, however, that the State of New Jersey, the county in which such tract of land is situated, and the municipality in which such tract of land is situated shall be given the option of purchasing such tract of land for a sum equal to the highest bid, which option must be exercised in writing delivered to the county park commission within 20 days after the county park commission mails notice of the sale and amount of the highest bid to the aforesaid governmental entities. In the event that more than one governmental entity elects to exercise the option granted hereunder, the county park commission shall have the right to decide to which governmental entity the land shall be sold.
N.J.S. § 40:37-146.2