Are you sure you don’t mean Route 12 that goes right through the center of Fox Lake? Route 59 is another road a little further west. Fox Lake is a small town on the Fox River, very quiet and nice south of Lake Geneva, Wisconsin.
Rts 59 and 12 merge in Barrington and its two lanes through town. It’s a big bottleneck during the afternoon. There are train tracks all over that area, too. It runs through Fox Lake farther north.
Route 21 eventually merges to the south with Route 45 to become Manheim Rd, I believe. The author may be confused or have transposed the digits.
L