U. S. Highway 31


Mackinaw City, Michigan – Spanish Fort, Alabama
Longest Mileage: 1358
Current Mileage: 1280

 

U.S. 31 is one of the original 1926 highways. Its current route 5 state north to south route has been in place since 1991. Its original northern terminus was Allenville, Michigan and its original southern terminus was Mobile, Alabama.

Michigan – 358 Miles
Indiana – 265 Miles
Kentucky – 173 Miles
Tennessee – 121 Miles
Alabama – 365 Miles