U.S. 55
	This is a tough call.  Since I-55 cuts through the middle of the nation (going to Chicago, St. Louis, Memphis and New Orleans), I may have faced my biggest challenge as to where US 55 should go. US 55 starts in Brule, WI, along WI 27.  It continues for a good distance to Prairie du Chien, where it crosses into Iowa via a multiplex with US 18.  After a short multiplex with US 52, it continues into Cedar Rapids via IA 13.  US 55 multiplexes with US 30 before picking up IA 38 east of Stanwood.  It ends at Muscatine, at a junction with US 61.