Prior to 1971, M-81's western terminus formerly ended at M-47 just west of Downtown Saginaw, when I-675 was completed through the city, M-81 was scaled back to its present day terminus at M-13.
M-81's western terminus formerly ended at M-47 just west of Downtown Saginaw M-81 was scaled back to its present day terminus at M-13. This was prior to 1971. I-675 was completed through the city.