AMP: Cold Springs-Pendleton Hwy #36/20 Location: OR 37 and OR 334, Umatilla Cty Reassurance shield after the 334 junction. AMP: 13 Location: OR 37 and Holdman Rd, Holdman, Umatilla Cty A couple miles later, we’ll enter unincorporated Holdman. AMP: 13 Location: OR 37 and Holdman Rd, Umatilla Cty Reassurance shield as we head out of Holdman. AMP: 8 Location: … Continue reading Oregon Route 37, OR 334 to US-730