Minnesota State Highway 139

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Trunk Highway 139 marker

Trunk Highway 139
Route information
Defined by MS § 161.115(10)
Maintained by Mn/DOT
Length: 3.913 mi (6.297 km)
Existed: April 22, 1933[1] – present
Major junctions
South end: Iowa 139.svg IA 139 at the Iowa state line
  County 44.png CR 44 at Harmony
North end: US 52.svg U.S. 52 at Harmony
Counties: Fillmore
Highway system
  • Minnesota Trunk Highways
MN 135 MN 149

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 is 3.9 miles (6.3 km) in length and passes through the city of Harmony and Harmony Township.

Route description[edit]

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.[2] It is not marked with this number.


Highway 139 was authorized in 1933.[1]

The route was paved by 1953.[3]

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.[3]

Major intersections[edit]

The entire route is in Fillmore County.

Location mi km Destinations Notes
Harmony Township 0.000 0.000 Iowa 139 Continuation beyond Iowa state line
1.016 1.635 CR 30
Harmony 3.044 4.899 CR 44
3.961 6.375 US 52
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


Route map: Google

KML is from Wikidata
  1. ^ a b "Chapter 440-H.F. No. 2000", Session Laws of Minnesota for 1933, Mike Holm, Secretary of State, pp. 881–897 
  2. ^ "161.115, Additional Trunk Highways". Minnesota Statutes. Office of the Revisor of Statutes, State of Minnesota. 2010. Retrieved November 21, 2010. 
  3. ^ a b Riner, Steve. "Details of routes 101–149". The Unofficial Minnesota Highways Page. Self-published. Retrieved November 21, 2010. [self-published source]