Milepost 2D on US-395 south. These types of mileposts have been appearing in Oregon in recent years. The letters represent the segment of the internal highway that this particular stretch is part of. In this case the D is the 4th named highway along US-395 south from the Washington line. (A=Umatilla-Stanfield, B=Pendleton-John Day, C=John Day Burns, D=Lakeview-Burns, E=Fremont).