U.S. Federal Route 12 cuts in a angle across Walworth County. Over half of U.S. Rt. 12 in Walworth County is a expressway at interstate standards. U.S. Rt. 12 passes through the following towns in Walworth County. Genoa City
A guide marker on EB WI St Rt 11/NB WI St Rt 67. A BGS on SB I-43. SB U.S. Rt. 12 south of I-43. SB U.S. Rt. 12 near Springfield. NB U.S. Rt. 12 north of WI St Rt 50 near Lake Geneva. A junction marker on EB WI St Rt 50. SB U.S. Rt. 12 south of WI St Rt 50/120. SB U.S. Rt. 12 near Pell Lake. The first warning sign of the freeway ending on SB U.S. Rt. 12. The speed reduction signs on SB U.S. Rt. 12. The lanes narrow signs on SB U.S. Rt. 12. All traffic at the final interchange are forced onto the ramps. SB U.S. Rt. 12 at the far end of the freeways. SB U.S. Rt. 12 near the Illinois/Wisconsin state line. NB U.S. Rt. 12 at the Wisconsin/Illinois state line. NB U.S. Rt. 12 near the Wisconsin welcome sign.