 M @-@ 105 was the designation of a former state trunkline highway in The Thumb region of the US state of Michigan . It served as a connecting route between M @-@ 53 in Popple and M @-@ 83 ( now M @-@ 142 ) near Elkton . The designation was in use in the 1920s and 1930s , and it has not been reused since . 
