Cotton, who became executive director in August 2017, recently had spent time at Newark Liberty International Airport and John F. Kennedy Airport, where travelers have returned from some of the counties where the virus is widespread, the governor said.
"Mr. Cotton is currently asymptomatic and has self-quarantined at his home while maintaining a full schedule," the Port Authority said in a statement. "Any staff members who have had close contact with him in recent days are also working from home as they follow the guidelines and protocols put in place by the New York State Department of Health."
In addition to JFK and Newark airports, the Port Authority manages LaGuardia Airport, World Trade Center site, PATH rail system, Holland Tunnel, Lincoln Tunnel, George Washington Bridge, Bayonne Bridge, Goethals Bridge, Outerbridge Crossing, and other transit and port facilities.
Dozens of COVID-19 cases have been confirmed in New York. Cuomo declared a state of emergency over the weekend.