AMP: Freewater Hwy #339/2 Location: OR 339 and Sunnyside Rd, Umatilla Cty No reassurance shield after the 332 junction. AMP: 0 Location: OR 339 and State Line Rd, Umatilla Cty A couple miles later, Oregon 339 ends at State Line Rd, which saddles the state line. Stay straight to head up into Walla Walla County, Washington.  S … Continue reading Oregon Route 339, OR 332 to WA State Line