Minnesota State Highway 139
|Defined by MS § 161.115(10)|
|Maintained by Mn/DOT|
|Length:||3.913 mi (6.297 km)|
|Existed:||April 22, 1933 – present|
|South end:||IA 139 at the Iowa state line|
|CR 44 at Harmony|
|North end:||U.S. 52 at Harmony|
Minnesota State Highway 139 (MN 139) is a highway in southeast Minnesota, which runs from Iowa Highway 139 at the Iowa state line and continues north to its northern terminus at its intersection with U.S. Highway 52 in Harmony.
Highway 139 serves as a north–south route between the Iowa state line and the city of Harmony. It is also known as Main Avenue in Harmony.
The route passes near Niagara Cave.
The route is legally defined as Route 79 in the Minnesota Statutes. It is not marked with this number.
Highway 139 was authorized in 1933.
The route was paved by 1953.
Highway 139 was numbered to match adjoining Iowa Highway 139. This is the only example where Minnesota numbered a route to match an existing route in Iowa, rather than the opposite. Iowa renumbered its state highways that crossed into Minnesota in the early 1960s to match the Minnesota numbers.
The entire route is in Fillmore County.
|Iowa–Minnesota state line||0.000||0.000||Iowa 139|
|Harmony Township||1.016||1.635||County 30|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- "Chapter 440-H.F. No. 2000", Session Laws of Minnesota for 1933 (Mike Holm, Secretary of State): 881–897
- "161.115, Additional Trunk Highways". Minnesota Statutes. Office of the Revisor of Statutes, State of Minnesota. 2010. Retrieved November 21, 2010.
- Riner, Steve. "Details of routes 101-149". The Unofficial Minnesota Highways Page. Self-published. Retrieved November 21, 2010.[unreliable source?]