a government commission that manages bridges, tunnels, airports, and other such facilities of a port or city.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for port authority
Historical Examples of port authority
That port-authority person called again about two hours back, and it began to dawn upon me that we were done for.The Recipe for Diamonds
Charles John Cutcliffe Wright Hyne