AMP: Sumpter Hwy #410/3 Location: Sumpter Hwy and OR 7, Baker Cty No reassurance shield as OR 410 begins. AMP: 1 Location: Sumpter Hwy and Bear Gulch Rd, Sumpter A couple miles later, we’ll enter Sumpter. AMP: 1 Location: Mill St and Austin St, Sumpter Downtown Sumpter. AMP: 0 Location: Sumpter Hwy and Magnolia Ave, Baker Cty As we … Continue reading Oregon Route 410, OR 7 to Sumpter