AMP: 196 Location: Santa Fe Ave and Sitgreaves St, Flagstaff After the 180 split, keep left to stay on Route 66, which will continue to carry I-40 Business. AMP: 196 Location: Santa Fe Ave and Sitgreaves St, Flagstaff Keep left to follow the business loop to I-17 and I-40 as well. The loop is presumably … Continue reading Interstate 40 Business, US-180 to SR 89A