AMP: 333 Location: US-20 and Main St, Madison Cty Reassurance shield after the 33 interchange. AMP: 338 Location: US-20 and Salem Rd, Sugar City Reassurance shield after Salem Rd as we enter Rexburg’s suburb, Sugar City. AMP: 339 Location: US-20 and SH-33 Spur, Sugar City Just after that, exit for SH-33 Spur to SH-33. Easier just to sign … Continue reading U.S. Route 20, SH-33 to SH-33 Spur