AMP: 227 Location:  I-15 and US-287, Lewis and Clark Cty Reassurance shield as 287 joins the interstate AMP: 227 Location: I-15 and Wolf Creek Rd, Lewis and Clark Cty 1 mile to junction S-434 AMP: 226 Location: I-15 and S-434, Lewis and Clark Cty Exit for 434, which heads north back up to where 287 and 200 intersected. … Continue reading U.S. Route 287, I-15 to S-434