 Idaho State Highway 1

State Highway 1 (SH 1) is a state highway in Boundary County, in the U.S. state of Idaho.It extends from U.S. Route 95 (US-95) east of Copeland, north to British Columbia Highway 21 (BC 21) in Porthill.The route serves as a connector between Bonners Ferry, via US-95 south, Porthill, and Creston, BC.