AMP: North Umpqua Hwy E #138/-0 Location: Washington Ave and Pine St, Roseburg As 138 splits from 99, keep right to access I-5 north and OR 138 west. AMP: -0 Location: Washington Ave and Mardone St, Roseburg Again, keep right for I-5 north. AMP: -0 Location: Washington Ave and Mardone St, Roseburg Exit right for I-5 north/OR 138 … Continue reading Oregon Route 138, OR 99 to I-5