AMP: 97 Location: US-287 and S-437, Broadwater Cty 12 miles to I-90 AMP: 106 Location: US-287 and Wheatland Rd, Broadwater Cty As we approach I-90, we’re advised to stay on 287 for Va. City and Lewis and Clark Caverns. AMP: 107 Location: US-287 and I-90, Broadwater Cty Junction I-90 coming up AMP: 107 Location: US-287 and I-90, Broadwater Cty … Continue reading U.S. Route 287, S-437 to I-90