... that the first rural highway centerline in the US was painted on M-15 (currently CR 492) between Negaunee and Marquette in 1917?
... that some of the original highway numbers assigned by the time the system was signposted in 1919 like M-12 or M-41 were decommissioned in 1926 and never used since?
... that M-131 was assigned as an extension of US 131 in 1926 before it was progressively replaced by US 131 and later M-119?
... that Michigan is home to the first roadside table in the country, which was installed next to US 16?
... that Michigan is also home to the first welcome center in the nation, which opened in 1935 near New Buffalo?
... that I-94 was the first Interstate Highway completed border-to-border in any state in the country when it was completed between New Buffalo and Detroit in 1960?
