Iowa Highway 143

Iowa Highway 143
Iowa 143 highlighted in red
Route information
Maintained by Iowa DOT
Length	12.049 mi[1] (19.391 km)
Existed	1926–present
Major junctions
South end	Iowa 3 near Marcus
North end	Iowa 10 near Granville
Location
Country	United States
State	Iowa
Counties	Cherokee, O'Brien
Highway system
Iowa Primary Highway System Interstate US State Secondary Scenic
← Iowa 141 → Iowa 144

Iowa Highway 143 (Iowa 143) is a north–south state highway in northwestern Iowa. The highway is 12 miles (19 km) long. The route was designated in 1926 when its original number, Primary Road No. 75 was reused for U.S. Highway 75. It was originally a short spur route into Marcus, but was extended north to Iowa 10 in 1938. From 1941 to 1961, the highway extended south from Iowa 3 / Iowa 5 to the Cherokee–Woodbury county line.