 = M @-@ 108 ( Michigan highway ) = 
 
 M @-@ 108 was a state trunkline highway in the US state of Michigan . The highway followed <unk> Street , although some maps also labeled it as the Mackinaw Highway . The road was on the boundary between Emmet and Cheboygan counties . 
 The original M @-@ 108 designation dated back to 1928 . This version was transferred to local control in 1957 , but revived later under a different routing in 1960 . On April 29 , 2010 , the <unk> News @-@ Review reported that the Michigan Department of Transportation ( MDOT ) will rebuild the roadway in preparation to transfer it back to local control once again . MDOT and local officials signed memoranda of understanding , completing the transfer of the roadway on December 9 , 2010 . 
 
 = = Route description = = 
 
 The 1 @.@ <unk> @-@ 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 <unk> Street north from I @-@ 75 into the Village of Mackinaw City past the Thunder Falls Water Park and some local <unk> 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 . 
 
 = = History = = 
 
 In 1928 , the first M @-@ 108 designation was commissioned along a rare three @-@ legged route connecting the State Highway Ferry Docks with the Fort <unk> State Historic Park and US 31 . At one point while traveling westbound on M @-@ 108 , motorists could turn right onto northbound M @-@ 108 or left onto southbound M @-@ 108 . In preparation for the opening of the Mackinac Bridge , the Michigan State Highway Department transferred all of M @-@ 108 to local control in late 1957 , decommissioning the designation at the same time . In 1960 , the current M @-@ 108 was commissioned along the current routing . 
 On April 29 , 2010 , MDOT announced plans to transfer M @-@ 108 in its entirety to the Village of Mackinaw City and Emmet County . In preparation for this transfer , MDOT <unk> , widened and reconstructed the roadway . While rebuilding the section of the highway between US 23 and the northern terminus , the Welcome Center was closed . Plans had this section to be completed , and the center to bed reopened , for Memorial Day weekend , with the remainder of construction to be completed in August . Following the transfer to local control , M @-@ 108 ceased to be a state highway and the designation was decommissioned . Previous news reports stated that the roadway was too small to merit highway status under federal guidelines . The transfer was completed on December 9 , 2010 when MDOT and local officials signed memoranda of understanding to affect the transfer . The section within the Village of Mackinaw City was transferred to the village , and the remainder to Emmet County . 
 
 = = Major intersections = = 
 
 The entire highway was on the Emmet – Cheboygan county line . 
 
 