The powers and authority granted in this act, shall be deemed to include power and authority to purchase and accept gifts of lands for boulevards and highways to be laid out as boulevards by county authority and power and authority to improve the same, and the words "parks owned or held in trust by townships, cities and villages," shall be deemed to include boulevards or highways or streets laid out as boulevards and owned or held in trust by the municipalities aforesaid.
MCL 123.65