MP: 233.11 Location: SR 20 and US-97, Okanogan SR 20 travels right over the Okanogan River and comes up on a junction with 97   MP: 233.3 Location: SR 20 and US-97, Okanogan JCT US-97. Turn right to head south on US-97, and left to take SR 20 and US-97 up to Tonasket where they … Continue reading State Route 20, SR 215 to US-97