U.S. Route 25 in Michigan

US Highway 25 (US 25) was a part of the United States Numbered Highway System in the state of Michigan that ran from the Ohio state line near Toledo and ended at the tip of The Thumb in Port Austin. The general routing of this state trunkline highway took it northeasterly from the state line through Monroe and Detroit to Port Huron.

Source: Wikipedia — U.S. Route 25 in Michigan (CC BY-SA 4.0)