Last Driven August 2020 AMP: 340 Location: I-90 and US 89, Park Cty Reassurance shield as 89 joins the interstate. 89 will concur with 90/191 to Livingston. (Historic Photo: August 2013) AMP: 338 Location: I-90 and I-90 Business, Park Cty First, the I-90 Business loop will exit. AMP: 337 Location: I-90 and I-90 Business, Park … Continue reading U.S. Route 89, I-90/US-191 to I-90 Bus