Filming of the "Transformers 3" movie is continuing this weekend, and parts of Upper Wacker Drive are closed and 11 downtown CTA buses rerouted until early Monday morning.
East Wacker Drive closed from Wabash Avenue to State Street about 8 p.m. Friday and will remain closed until 5 a.m. Monday, officials said. Wabash Avenue is closed between Wacker Drive and East Lake Street until 5 a.m. Monday.
Chicago fire and police personnel will supervise special effects and pyrotechnics, including simulated gunfire, smoke, fireballs and explosions, officials said.
During brief periods from 8a.m. until 8 p.m. on Saturday and Sunday, helicopters will be used for aerial photography, officials said.