News Chopper 12’s Matt Salemme said North Avenue was shut down between Third and 10th streets. The northbound and southbound freeway exit ramps to North Avenue were also closed. Traffic was backed up on I-43 at 5 p.m. Slideshow: Demonstrators ‘Occupy’ Bridge Over I-43 Protesters on the bridge set up four or five tents in the middle of the bridge.They said they were gathering to, declare an “economic emergency for the 99 percent.””Enough is enough,” said Dee Jeffries of Wausau, an unemployed mother of four teenagers planning to attend. “We need jobs and we need them now. The only way to make that happen is to make our voices heard and our bodies be seen.”Chief Ed Flynn spoke to the demonstrators on the bridge, saying his officers were going to protect the neighborhood.”I see a working class neighborhood that has been disrupted by people who couldn’t care less about the people who actually live here,” Flynn said. “We’re going to let them play demonstration games for a while.”As of 10 p.m., Milwaukee police said they had made six arrests. Five of the were for city disorderly conduct at the start of the protest because some cars had to take evasive action to avoid hitting them, police said.WISN 12 News crews at scene say the demonstration ended peacefully.