Bellevue finally incorporated as a village on January 1, 1957. The realignment of Highway 3 in the 1970s led to a decline of Bellevue's business section.
On November 3, 1978, the Government of Alberta passed the Crowsnest Pass Municipal Unification Act, which led to the formal amalgamation of the Village of Bellevue with the Town of Blairmore, the Town of Coleman, the Village of Frank, and Improvement District (ID) No. 5 on January 1, 1979.