Heading downtown for the Magnificent Mile Lights Festival? You won't be alone: the Trib reports 800,000 are expected at the fest which has already kicked off and runs all day, climaxing with a parade this evening from 5:30 p.m. til 6:55 p.m. Of course, there are some reroutes and traffic issues to deal with if you're heading downtown for any reason. If you're taking the CTA, be sure to check in here for their bus reroutes and if you're driving, here's a list of road closures, courtesy of the Tribune.

