M @-@ 47 is a north – south state trunkline highway in the US state of Michigan . It run near Saginaw and Midland in the Tri @-@ Cities area of the Lower Peninsula . The highway run through suburban and agricultural areas to connect the two cities with the airport in the area . The northernmost section of M @-@ 47 runs along a freeway to the terminus at US Highway 10 ( US 10 ) . M @-@ 47 runs for 14 @.@ 328 miles ( 23 @.@ 059 km ) , all of which have been listed as a part of the National Highway System .