Other Michigan Highways

While the original intent and still a major focus of the Michigan Highways website was to catalog the various numbered Interstate, US and State-designated highways, there are other types of marked highways in Michigan. Some of the "other" highways are posted along the state trunklines, while others have nothing to do with the state-maintained system of highways. Because of this, the signing of some of these "other" types of highways may be less than thorough and detailed maps may need to be consulted in order to follow them.

Other Highways

• Unsigned State Trunklines - The vast majority of state trunklines in Michigan carry one or more route number designations. A few, though, either have no route number or the route designation is "secret"—not posted along the highway and, thereby, not generally known to the public. This page details those highways.
• Great Lakes Circle Tours - The Great Lakes Circle Tours are marked routes circling four of the Great Lakes, with Michigan hosting portions of each. This portion of the website details each of these.
• Forest Highways - Michigan only hosts a handful of these routes, but they serve to provide all-weather access to our National Forests. The Forest Highways in Michigan are rather well-maintained.
• Heritage Routes - A relatively new system, Heritage Routes are signed along state trunklines and point to Historic, Recreational or Scenic opportunities.
• Polar-Equator Trail - The P-E Trail was signed by a group affiliated with Michigan State University and seems to be slowly fading into the past. This portion of the website attempts to capture the story of this route before it is lost forever.