§ 20. Nothing herein contained shall be construed to authorize or
permit the port authority to undertake the construction of any vehicular
bridge or tunnel over or under the Arthur Kill, unless or until adequate
provision has been made by law for the protection of those advancing
money upon the obligations of the port authority for the construction of
the bridges mentioned in chapter two hundred and ten of the laws of
nineteen hundred twenty-five, or the construction of any vehicular
bridge or tunnel over or under the Hudson river, at or north of Sixtieth
street in the borough of Manhattan, city of New York, unless or until
adequate provision has been made by law for the protection of those
advancing money upon the obligations of the port authority for the
construction of the bridge mentioned in chapter seven hundred and
sixty-one of the laws of nineteen hundred twenty-six, or the
construction of any vehicular bridge or tunnel over or under the Kill
van Kull unless or until adequate provision has been made by law for the
protection of those advancing money upon the obligations of the port
authority for the construction of the bridge mentioned in chapter three
hundred of the laws of nineteen hundred twenty-seven.