Missouri Route MM (Franklin County)

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Route MM

Route information
Maintained by MoDOT
Length4.138 mi[1] (6.659 km)
Major junctions
South end Route 100 in Gray Summit
North end Route T in Labadie
CountryUnited States
Highway system

Route MM is a short highway in Franklin County, Missouri, serving as a connector from Gray Summit to Labadie. Despite its short length, it is a regionally important road, being the only way to get to Purina Farms, as well as serving the subdivisions of Gray Summit. It is a two-lane, undivided road for its entire length.

Route description

Route MM begins at an intersection with Route 100 in Gray Summit, traveling for 0.86 miles (1.38 km) before reaching Purina Farms. It continues for 1.64 miles (2.64 km) through unincorporated Franklin County, serving multiple farms and small subdivisions, before reaching Coleman Road.

After the intersection with Coleman Road, it encounters some difficult terrain, with multiple hills and sharp turns. After 1.633 miles (2.628 km), Route MM reaches its northern terminus at an intersection with Route T.

Major intersections

The entire route is in Franklin County.

Gray Summit0.0000.000
Route 100 / Historic US 66 to I-44 – Wildwood
Southern terminus, continuation as Roberts St.
Labadie4.1386.659 Route T / Lewis and Clark Trail – Washington, St. AlbansNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also


  1. ^ a b Missouri Department of Transportation (April 11, 2024). MoDOT HPMAPS (Map). Missouri Department of Transportation. Retrieved April 11, 2024.