M-173 (Michigan highway)
M-173 was the designation given to two former state trunklines in the U.S. state of Michigan:
- M-173 (1930s Michigan highway) near Orleans in Ionia County
- M-173 (1939–1972 Michigan highway) in Menominee
This article includes a list of roads, streets, highways, or other routes that are associated with the same title.
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←  M-172 | MI | →  M-174 | ||