In 1999 , it was designated by MDOT as what is now called a Pure Michigan Byway .
The section of BL I - 75 that follows Woodward Avenue has a pair of special designations attached to it .
In 1999 , Woodward Avenue was designated by MDOT as what is now called a Pure Michigan Byway .
The section of BL I - 75 that follows Woodward Avenue has a pair of special designations attached to it .