M-138 | ||||
|---|---|---|---|---|
 M-138 highlighted in red | ||||
| Route information | ||||
| Maintained by MDOT | ||||
| Length | 20.141 mi[1] (32.414 km) | |||
| Existed | c. 1931[2][3]–present | |||
| Major junctions | ||||
| West end |  M-15 near Munger | |||
| East end |  M-24 near Akron | |||
| Location | ||||
| Country | United States | |||
| State | Michigan | |||
| Counties | Bay, Tuscola | |||
| Highway system | ||||
| ||||
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M-138 is a 20-mile-long (32 km) east–west state trunkline highway in The Thumb region of the US state of Michigan. The highway runs from a junction with M-15 west of the unincorporated community of Munger in Bay County to the intersection with M-24 east of Akron in Tuscola County. The trunkline runs through rural agricultural areas outside of the villages and communities it serves. It was designated in the 1930s and extended in the 1940s. M-138 was truncated in the 1990s as well.
- ^ Michigan Department of Transportation (2021). Next Generation PR Finder (Map). Michigan Department of Transportation. Retrieved October 11, 2021.
- ^ Cite error: The named reference
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MSHD31-10was invoked but never defined (see the help page).