N.J. Stat. § 32:12-16
Notwithstanding the agreement and consent of three or more counties, the commission shall not be authorized to take any proceedings or incur any expense or obligation until the terms and conditions of the agreement and consent shall have been reviewed and approved by three judges of the Superior Court, especially designated by the Governor for that purpose. The judges shall designate a time and place for the holding of a public hearing on the question of the approval of the terms of the agreement, at which hearing all persons interested may be heard.
If the agreement is approved and confirmed by the three judges, the same shall be binding upon the counties consenting to the agreement, but in no event shall the obligation to be assumed or imposed upon any county for the construction of any bridges or tunnels exceed ten million dollars ($10,000,000.00).
N.J.S. § 32:12-16