WIS 20 begins at the junction of US 12 and
WIS 67 and proceeds east, going south around a junction with County Trunk Highway J (CTH-J) east of the terminus and bypassing the small community of
Troy Center. WIS 20 connects with
Interstate 43 (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. WIS 83 splits to the south at WIS 20's junction with
WIS 36 in
Rochester. From here, WIS 20 turns east again, where it becomes Washington Avenue. WIS 20 connects with
WIS 75 and crosses
US 45 in the town of
Yorkville. WIS 20 has an interchange with
I-94 and
US 41 in
Ives Grove. and enters
Mount Pleasant upon crossing the Interstate, following Washington Avenue. WIS 20 crosses
WIS 31 while in Mount Pleasant, then enters converges with
WIS 32 just southwest of downtown Racine. The two routes follow Washington Avenue northeast and turn east onto the one-way 7th Street. WIS 20 completes a loop to turn around onto westbound one-way 6th Street as WIS 32 turns north onto Main Street in downtown Racine. These intersections form the eastern terminus of WIS 20. ==History==