A crowd of protesters and police officers swarmed the Brooklyn Bridge on Saturday.

Anjali Mullany/News

A crowd of protesters and police officers swarmed the Brooklyn Bridge on Saturday.

Thousands of Occupy Wall Street protesters swarmed the Brooklyn Bride Saturday, shutting down car lanes and setting up yet another tense showdown with the NYPD.

Roughly 700 people were arrested after standing in the roadway, blocking the Brooklyn-bound lanes. Traffic in the opposite direction was slowed — but still running after the 4 p.m. standoff.

The march started from Zuccotti Park, the homebase for the two-week old protest against corporate excess. When demonstrators reached the base of the span, a bottleneck formed and many started marching up the pedestrian walkway.

At one point, about another 100 protesters marched from Zuccotti Park and gathered outside City Hall with 200 others who had scampered off the bridge. The mass of protesters faced down a wall of cops blocking the bridge, chanting,

“Whose streets? Our streets” and “Let them go.”

The arrests marked the second Saturday in a row protesters landed in cuffs. But in better news, whoever started the Radiohead rumor is brilliant!