Interstate 94 (Michigan)

The first segment of what later became I-94 within the state, the Willow Run Expressway, was built near Ypsilanti and Belleville in 1941, with an easterly extension to Detroit in 1945. This expressway was initially numbered M-112. Sections through the Detroit area are named the Detroit Industrial and Edsel Ford Freeways.

Interstate 94 (I-94) is the northernmost east–west Interstate Highway (but I-96 is the highest-numbered) connecting the Great Lakes and Intermountain regions of the United States. I-94's western terminus is in Billings, Montana at a junction with Interstate 90; its eastern terminus is the U.S. side of the Blue Water Bridge in Port Huron, Michigan, at the Sarnia, Ontario, Canada border, where together with Interstate 69 it meets Canadian Highway 402. It is currently the longest non-primary Interstate (Interstate that does not end with a 0 or 5), but may be surpassed by Interstate 69 in the future.