Location: I-80 and US 6, Newton Reassurance shield after the US 6 split. Location: I-80 and Iowa Speedway Dr, Jasper Cty Reassurance shield after the Iowa Speedway interchange as we head out of Newton. Location: I-80 and IA 224, Jasper Cty A couple miles later, we’ll approach Iowa 224. Location: I-80 and IA 224, Jasper … Continue reading Interstate 80, US-6/IA-14 to IA-224