M-38 (Michigan highway)

M-38
M-38 highlighted in red
Route information
Maintained by MDOT
Length:	42.225 mi (67.955 km)
Existed:	1968 – present
Tourist routes:	Lake Superior Circle Tour
Major junctions
West end:	US 45 / M-64 in Ontonagon
	M-26 in Greenland
East end:	US 41 in Baraga
Location
Counties:	Ontonagon, Houghton, Baraga
Highway system
Michigan State Trunkline Highway System Interstate US State Byways ← M-37 M-39 →

M-38 is an east–west state trunkline highway in the Upper Peninsula (UP) of the U.S. state of Michigan. Its west end starts in Ontonagon and runs east to Baraga, some 42.225 miles (67.955 km) apart. The highway crosses streams and rivers in forest lands and provides access to a casino. The east end is located by the Keweenaw Bay of Lake Superior in the Keweenaw Bay Indian Community.

There have been two highways in the state to carry the designation. The first was located in the southeastern Lower Peninsula. The current version of M-38 was created from a section of M-35 in the 1960s. This section was orphaned from the rest of M-35 when the highway was cancelled through the Huron Mountains.

M-38 begins at a four-way intersection in Ontonagon. US Highway 45 (US 45) runs north–south through this intersection while M-64 runs west and M-38 runs east on Steel Street. This intersection is both the eastern terminus of M-64 and the western terminus of M-38. From here, M-38 forms a segment of the Lake Superior Circle Tour along Ontonagon–Greenland Road to a junction with M-26 near Greenland. The roadway runs through forest land and crosses several small streams while traveling southeasterly. Outside of Greenland, M-38 curves to the north around town after intersecting Plank Road. On the east side of town, M-26 and M-38 meet and join in a concurrency after Ontonagon–Greenland Road meets Plank Road a second time. The two highways run together for just over a mile to the unincorporated community of Lake Mine. There, M-38 turns south through the community while M-26 turns off to the northeast.