Location: BC-21 and Porthill Rd, Central Kootenay RD Metric signage as we enter Canada. Location: BC 21 and Porthill Rd, Central Kootenay RD BC 21 is part of the International Selkirk Loop. Location: BC 21 and Canyon St, Creston A few kilometers later, we’ll enter Creston. Turn right at Canyon Street to follow it over … Continue reading British Columbia Highway 21, ID-1/ID Int’l Boundary to BC-3