From its initial opening in 1961 until 1964, I-194 also carried the BL I-94 and M-78 designations. BL I-94 was rerouted in Battle Creek to Martin Luther King Drive and M-78 in 1964, and M-78 was replaced by M-66 in 1965. The last change to the I-194 routing was the extension of the northern end of the freeway from Columbia Avenue to Michigan Avenue in 1966. At the time, MDOT's predecessor, the Michigan State Highway Department, called all auxiliary Interstate Highways "Penetrator" when planning the freeway network in the state; a name which stuck to I-194.