Sections of Manhattan are getting ready for a lockdown when Pope Francis arrives, as Police Commissioner Bill Bratton personally conducted security checks along his route Wednesday and homeless vagrants were ushered to shelters.

Bratton’s first stop was St. Patrick’s Cathedral at around 8:25 a.m., meeting with Timothy Cardinal Dolan to discuss the pontiff’s Thursday night visit.

“I was just chit-chatting with the cardinal,” Bratton joked upon leaving.

Actually, “We were looking at the security arrangements for the cathedral. And the cardinal invited us in just to say hello.”

Bratton said security fences would run near the cathedral from 49th to 55th streets on Fifth Avenue.

Bratton then headed for the United Nations — the second stop on Francis’ itinerary and Friday’s first papal event.

Bratton was also planning to stop at the 9/11 Memorial, Our Lady Queen of Angels School in East Harlem, Central Park and Madison Square Garden.

Meanwhile, Mayor de Blasio announced the city would partner with the Archdiocese of New York to offer 150 more beds to the city’s homeless.

The city and the Catholic Church have worked together for years on the issue, but the stepped-up effort comes as de Blasio struggles to house people living on the streets.

De Blasio appeared with Dolan at the St. Anthony’s Shelter in the South Bronx Wednesday to announce the church’s offering, as well as 300 other beds provided by other churches and faith-based groups.