 CR 81, between the Robbinsdale and Minneapolis border and present-day US 169 in Brooklyn Park, was constructed between the late 1940s and 1950s.Until I-94 and I-494 were built, CR 81 served as the principal route between Minneapolis and points northwest.Formerly a trunk highway supervised by the state and known as US 52, US 169, MN 101, MN 152, and MN 218 in various segments at various times, the state turned over management of the roadway to Hennepin County in 1988 and it was renumbered to CR 81.