M-64 (Michigan highway)

M-64
M-64 highlighted in red
Route information
Maintained by MDOT
Length	63.765 mi[1] (102.620 km)
Existed	1930[2][3]–present
Tourist routes	Lake Superior Circle Tour
Major junctions
South end	CTH-B near Presque Isle, WI
Major intersections	US 2 in Marenisco M-28 in Bergland
North end	US 45 / M-38 in Ontonagon
Location
Country	United States
State	Michigan
Counties	Gogebic, Ontonagon
Highway system
Michigan State Trunkline Highway System Interstate US State Byways
← M-63 → M-65

M-64 is a north–south state trunkline highway in the Upper Peninsula of the US state of Michigan. It runs for approximately 63+3⁄4 miles (102.6 km) through the western part of the state in land that is part of the Ottawa National Forest. The highway connects with County Trunk Highway B (CTH-B) at the state line near Presque Isle, Wisconsin. As it passes through dense forests, M-64 runs along lakes Gogebic and Superior. The northern end is at a junction with US Highway 45 (US 45) in Ontonagon.

The M-64 designation was used on two other separate highways before it was used for the current highway. The first was at the other end of the state near the Ohio state line, and the second was on the Keweenaw Peninsula near Eagle Harbor. The current highway has carried the M-64 moniker since 1930, when it was assigned along two disconnected highways. These two parts were joined into a single corridor soon after. M-64 was one of the last highways in the state of Michigan to be paved in 1961. In the early part of the 21st century, the state replaced the bridge over the Ontonagon River and shifted the highway's northern terminus.