 The 1 @.@ 069 @-@ mile ( 1 @.@ 720 km ) long route connected two interchanges off Interstate 75 ( I @-@ 75 ) on the south side of Mackinaw City with a tourist welcome center . The southern terminus was at a partial interchange with I @-@ 75 ( exit 337 ) just south of Mackinaw City on the boundary between Emmet and Cheboygan counties . This interchange is about two miles ( 3 km ) north of the northern terminus of US Highway 31 ( US 31 ) . M @-@ 108 followed Nicolet Street north from I @-@ 75 into the Village of Mackinaw City past the Thunder Falls Water Park and some local motels to an intersection with US 23 . North of the US 23 intersection is the Michigan Welcome Center and other tourist amenities on the west side of the street . State maintenance ends at the intersection with the off @-@ ramp from northbound I @-@ 75 exit 338 . 
 The 1 @.@ 069 @-@ mile ( 1 @.@ 720 km ) long route<a href='been_done' title='1'><mark></mark></a> connected two interchanges off Interstate 75 ( I @-@ 75 ) on the south side of Mackinaw City with a tourist welcome center . The southern terminus<a href='been_done' title='2'><mark></mark></a> was at a partial interchange with I @-@ 75 ( exit 337 ) just south of Mackinaw City on the boundary between Emmet and Cheboygan counties . This interchange <a href='drop_aux' title='3'><mark>is</mark></a>about two miles ( 3 km ) north of the northern terminus of US Highway 31 ( US 31 ) . M @-@ 108 followed Nicolet Street north from I @-@ 75 into the Village of Mackinaw City past the Thunder Falls Water Park and some local motels to an intersection with US 23 . North of the US 23 intersection <a href='drop_aux' title='4'><mark>is</mark></a>the Michigan Welcome Center and other tourist amenities on the west side of the street . State maintenance <a href='uninflect' title='5'><mark>ends</mark></a> at the intersection with the off @-@ ramp from northbound I @-@ 75 exit 338 . 
Da 1 @.@ 069 @-@ mile ( 1 @.@ 720 km ) long route done connected two interchanges offf Interstate 75 ( I @-@ 75 ) on tdasouth side of Mackinaw City with a tourist welcome center . The southern terminus done was at a partial interchange wit I @-@ 75 ( exit 337 ) just south of Mackinaw City on the boundary between Emmet and Cheboygan counties . dis interchange about 2 miles ( 3 km ) north of thdaorthern terminus of US Highway 31 ( US 31 ) . M @-@ 108 followed Nicolet Street north from I @-@ 75 into thedallage of Mackinaw City past the Thunder Falls Water Park and some local motels to an intersection with US 23 . North of the da23 intersection the Michigan Welcome Center and other tourist amenities on the west side of the sdaet . State maintenance end at the indasection with the offda@ ramp from northbound I @-@ 75 exit 338 .