Okay, so they're already up and running again. http://www.dot.wisconsin.gov/travel/madison/
What follows is a blurb about it from WisDOT.
Keeping an eye on Dane County area traffic. Drivers planning a trip through major travel corridors in the Dane County region can now check up-to-date images of traffic conditions via the WisDOT Web site. Similar to traffic cameras that have been operating along Milwaukee-area freeways for years, drivers can now access a network of 22 video cameras that monitor traffic volumes and conditions at key locations in the Madison area. Updated every three minutes, the video images can be found at: www.dot.wisconsin.gov/travel/road/
. The camera images are centrally monitored at WisDOT's State Traffic Operations Center in Milwaukee and help transportation and law enforcement officials react promptly to incidents that impact traffic flow.