AMP: 13 Location: 400 N and State St, Spanish Fork Reassurance shield after the 51 junction. AMP: 15 Location: 1600 S and 1600 W, Mapleton As we enter Mapleton we’ll approach SR-147. 147 continues its unusual routing by serving as a sort of US-89 Business for Mapleton, continuing straight into town. N to US-89, W … Continue reading Utah State Route 147, SR-51 to US-89