Make a U-TURN and go back to I-90/94.
WI 30 is only 3 miles long, and serves as a 3di for I-90/94. It is a spur into Madison. We at Wisconsin Cruise recommend that it be renamed I-194. Unfortunately there will be about a mile of WI 30 left as it is not a freeway, but that could be named something else or be decommisioned so the 30 number could be used elsewhere.