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Introduction
Michigan's Trunklines
Michigan's Route Markers
Master List: 1918-Present
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Highway Listings

1-9
10-19
20-29
30-39
40-49
50-59
60-69
70-79
80-89
90-99
100-119

120-139
140-159
160-179
180-199
200-229
230-249
250-696
Bus. 2-31
Bus. 32-94
Bus. 96-496

County Routes
A-2 - C-81
D-19 - H-15
H-16 - H-63

Other Highways
Unsigned St. Trunklines
Great Lakes Circle Tours
Forest Highways
Pure Michigan Byways (Heritage Routes)
Polar-Equator Trail

In Depth: News & Articles
Memorial Highways
Rationalization
National Highway System
Historic Auto Trails
Zilwaukee Bridge
Michigan Left
more...

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BUS US-31 (Whitehall-Montague) Route Map

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