AMP: Ochoco Hwy #41/19 Location: 3rd St and Knowledge St, Prineville A couple blocks past OR 27, as we head out of downtown Prineville, we’ll approach Oregon 380. AMP: 19 Location: 3rd St and Combs Flat Rd, Prineville Turn right for unsigned OR 380 east to Prineville Reservoir and Paulina.  E to OR 207, W to OR … Continue reading U.S. Route 26, OR 27 to OR 380