Approximately 26 km east of Castlegar, the Crowsnest Highway reaches its eastern junction with Highway 3B; another 11 km to the east it converges with Highway 6 at Salmo and the two highways share a concurrency for 14 km to Burnt Flat.

The Crowsnest Highway continues through the Kootenay Pass on the Salmo-Creston Highway, a stretch known colloquially