AMP: 20 Location: SR-138 and SR-36, Mills Junction, Tooele Cty Reassurance shield as SR-138 begins. AMP: 19 Location: SR-138 and Brigham Rd, Mills Junction, Tooele Cty Reassurance shield as we head out of Mills Junction. AMP: 12 Location: SR-138 and SR-112, Grantsville As we enter Grantsville, we’ll approach SR-112. Follow 112 east back to Tooele. … Continue reading Utah State Route 138, SR-36 to SR-112