The Alberta portion of the Crowsnest Highway is also designated as Highway 3, running for approximately from the British Columbia border to Medicine Hat. It begins in Crowsnest Pass paralleling the Canadian Pacific Railway, first meeting Highway 40 at Coleman, then running east to the southern terminus of Highway 22. Highway 6 splits south near Pincher Creek. Approximately east of Pincher Creek, the highway becomes divided and interchanges with Highway 2 with which it is briefly concurrent, assuming the designation of the Red Coat Trail and CANAMEX Corridor. It proceeds for into the town of Fort Macleod, after which Highway 2 splits south to Cardston and the United States border. Highway 3 then crosses the Oldman River east of Fort Macleod near Monarch, prior to a partial interchange with Highway 23.