AMP: 15 Location: SH-28 and SH-33, Jefferson Cty Reassurance shield as 28 begins. 28 starts at milepost 15 because it used to extend to along 33’s alignment before 33 was extended through INEEL/INL AMP: 21 Location: SH-28 and 600 E Rd, Jefferson Cty Reassurance shield as 28 enters the Idaho National Laboratory. AMP: 30 Location: … Continue reading Idaho State Highway 28, SH-33 to SH-22