Missouri Route 31

Route 31
Route information
Maintained by MoDOT
Length	26.852 mi[1] (43.214 km)
Existed	1922–present
Major junctions
South end	US 169 near Gower
Major intersections	US 36 near Easton
North end	US 169 / Route E near Union Star
Location
Country	United States
State	Missouri
Highway system
Missouri State Highway System Interstate US State Supplemental
← Route 30 → Route 32

Route 31 is a highway in northwestern Missouri. Its northern terminus is at U.S. Route 169 in northwestern De Kalb County; its southern terminus is at US 169 southeast of St. Joseph.

Route 31 was one of the original 1922 state highways. Its northern terminus was originally five miles further north in King City at Route 4. That section of Route 31 became part of U.S. Route 169.