State highways are generally not zesty for biking. If you don't already own a set, I highly recommend the set of [4]
Wisconsin Bicycle Maps. They're color-coded to indicate how friendly or unfriendly (to bikes) the roads are. I just checked my map and the only section of Hwy 33 that is somewhat ok for bikes is between Fox Lake and Marcellon. The rest is red (i.e. - bad for bicycles). The section I referred to is color coded blue, which means is may not have a shoulder but is low traffic...or is moderate traffic but with a good shoulder. That said, I see plenty of alternative roads to avoid 33. It may add miles, but not a ton.
The Devils Lake/Baraboo region is beautiful and challenging on a bike. Enjoy
