Location: N State Ave and Walnut St, Newport WA State Route 41 is the most unique highway in the state route system. it runs entirely concurrent with Idaho State Highway 41 as this roadway straddles the Washington-Idaho state line. When SH-41 moves away from the Washington state line, SR 41 will end and SH-41 continues … Continue reading Idaho State Highway 41, US-2/SR 41 to SR 41/WA State Line