Missouri Route 143

Route 143
Route 143 highlighted in orange
Route information
Maintained by MoDOT
Length	17.507 mi[1] (28.175 km)
Existed	1937–present
History	Formerly Route 101
Major junctions
South end	Route 34 near Patterson
North end	Route 49 in Des Arc
Location
Country	United States
State	Missouri
Counties	Wayne, Iron
Highway system
Missouri State Highway System Interstate US State Supplemental
← Route 142 → Route 144

Route 143 is a short state highway in southern Missouri. The route starts at Missouri Route 34 near Patterson, and it travels north through Sam A. Baker State Park. North of the park, Route 143 turns westwards and ends at Route 49 at Des Arc. The road that became part of Route 143 was constructed around 1934, as a supplemental route traveling east from Des Arc. Four years later, a new state route, Route 101, was constructed from Route 34 to the state park, and it was renumbered to Route 143 in 1941. By 1964, a new supplemental route connected the two routes. The two supplemental routes were merged into Route 143 around six years later.