AMP: 0 Location: Higgins Ave and 5th St, Missoula No reassurance shield as 12 Business begins. AMP: 0 Location: Higgins Ave and Main St, Missoula A few blocks later, we’ll approach Business 90 AMP: 0 Location: Higgins Ave and Broadway St, Missoula Follow I-90 business east to I-90 east and I-90 business west to I-90 … Continue reading U.S. Route 12 Business, US-12 to I-90 Bus