 M @-@ 209 was a state trunkline highway in the lower peninsula of the US state of Michigan . It was located in Leelanau County in the Sleeping Bear Dunes National Lakeshore . Until it was decommissioned , it was Michigan 's shortest state highway . M @-@ 209 started at M @-@ 109 and went 0 @.@ 543 miles ( 0 @.@ 874 km ) or just 956 yards ( 874 m ) to Glen Haven . In 1996 , M @-@ 209 's designation was " abandoned " , and the road was turned over to the jurisdiction of the Leelanau County Road Commission . 
