N.J. Stat. § 32:2-23.7
In furtherance of the aforesaid policy, and in partial effectuation of the comprehensive plan heretofore adopted by the 2 said States for the development of the said port district, the Port of New York Authority (hereinafter called the Port Authority) is hereby authorized and empowered to construct, own, maintain and operate a bridge (hereinafter called the Narrows Bridge) over the Narrows of New York bay, and, in its discretion (and so long as it shall retain title to such bridge), such additions and improvements thereto and such approaches thereto and connections with highways and with the bridges between New Jersey and Staten Island as the Port Authority may deem necessary or desirable. The Port Authority may effectuate such approaches or connections, in its discretion, by agreement with any other public agency, which agreement may provide for the construction, ownership, maintenance or operation of such approaches or connections by such other public agency.
The Port Authority shall not commence the construction of the Narrows Bridge until after the execution of an agreement between the Port Authority and the Triborough Bridge and Tunnel Authority (hereinafter called the Triborough Authority) pursuant to section 4 hereof.
N.J.S. § 32:2-23.7