NEW YORK CITY - Massive gridlock is expected in New York City today as the pope moves through the city for the second day.

The entire area around Madison Square Garden will be off limits to cars.

Also, the streets around the 9/11 Memorial will be closed for some of the day, as will 16 blocks west of Central Park. 

Metro-North will operate three extra trains into Manhattan today to help. The MTA says subways will run normally, but some entrances and stairways at Penn Station will be closed because of today's papal Mass at Madison Square Garden.