... that M-97 was simultaneously named both Reid Highway and Groesbeck Highway by different levels of government from 1927 until 1949, the year it was dedicated to Alex Groesbeck?
... that M-69 was truncated in 1960 to one-fifth of its length for 33 years?
... that M-212 is the shortest signed highway in Michigan, connecting to Aloha State Park?