AMP: 0 Location: 19th Ave and I-90, Bozeman Just after 235, we’ll approach I-90. AMP: 0 Location: 19th Ave and I-90, Bozeman Follow I-90 east to Billings and I-90 west to Butte. AMP: 0 Location: 19th Ave and I-90, Bozeman 412 north continues after the freeway, so stay straight. AMP: 0 Location: 19th Ave and I-90, Bozeman Turn right … Continue reading Montana Secondary Highway 412, S-235 to I-90