Here, based upon the 5:45 PM 11/23/10 SDOT list of street closures, is a Google map of them. I tried my best but make no guarantees. Anybody can edit the map. Feel free to do so responsibly.
Collaboratively your, Andrew
View Street closures 11/23/10 in a larger map
maybe they changed the closure on madison? I drove down madison at around 5:20 and it was open till 23rd. The road closure sign prevented anyone going east of 23rd.