N.Y. Bridges & Tunnels New York-New Jersey Law § 4
The port authority shall, so far as it deems it practicable, treat as a single unified operation the construction, maintenance and operation of the said Midtown Hudson tunnel, the said Holland tunnel, the two vehicular bridges over the Arthur Kill, the vehicular bridge over the Kill van Kull, the vehicular bridge over the Hudson river at Fort Lee, and any other vehicular bridges or tunnels which it may construct or operate, raising moneys for the construction thereof and for the making of additions and improvements thereto in whole or in part upon its own obligations, and establishing and levying such tolls and other charges as it may deem necessary to secure from all of such bridges and tunnels as a group, at least sufficient revenue to meet the expenses of the construction, maintenance and operation of such bridges and tunnels as a group, and to provide for the payment of the interest upon and amortization and retirement of and the fulfillment of the terms of all bonds and other securities and obligations which it may have issued or incurred in connection therewith.
The additions and improvements to bridges and tunnels constructed or operated by it which the port authority is hereby authorized to effectuate shall include but not be limited to parking facilities, by which is meant transportation facilities consisting of one or more areas, buildings, structures, improvements, or other accommodations or appurtenances necessary, convenient or desirable in the opinion of the port authority for the parking or storage of motor vehicles of users of such bridges and tunnels and other members of the general public and for the transfer of the operators and passengers of such motor vehicles to and from omnibuses and other motor vehicles operated by carriers over or through such bridges or tunnels, and for purposes incidental thereto.
Nothing herein contained shall be deemed to prevent the port authority from establishing, levying and collecting tolls and other charges in connection with any parking facility in addition to and other than the tolls or charges established, levied and collected in connection with the bridge or tunnel to which such parking facility is an addition and improvement or any other bridge or tunnel.
The port authority shall not proceed with the construction of any parking facility as an addition and improvement to any bridge or tunnel other than a parking facility in the township of North Bergen in the state of New Jersey at or in the vicinity of the Midtown Hudson tunnel and its approaches and connections, except as heretofore or hereafter expressly authorized.
N.Y. Bridges and Tunnels New York-New Jersey Law § 4