 WIS 20 is a two-lane surface road with various four-lane roads within cities.WIS 20 begins at the junction of US 12 and WIS 67 and proceeds east, going south around a junction with CTH J one and one-half miles east of the terminus and bypassing the small community of Troy Center.WIS 20 connects with I-43 in East Troy, then meanders eastward into Racine County WIS 20 provides indirect access to Alpine Valley Music Theater which is south of the village just off WIS 120 WIS 20 merges with WIS 83 east on the west side of Waterford and both highways turn southeast into the village.