Iowa Highway 10

"IA 10" redirects here. For the former congressional district, see Iowa's congressional districts.

Iowa Highway 10
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Route information
Maintained by Iowa DOT
Length:	104.512 mi (168.196 km)
Major junctions
West end:	SD 46 near Hawarden
	US 75 near Maurice Iowa 60 at Alton US 59 near Sutherland US 71 near Sioux Rapids
East end:	Iowa 4 in Havelock
Location
Counties:	Sioux O'Brien Clay Buena Vista Pocahontas
Highway system
Iowa Primary Highway System Interstate U.S. State Secondary Scenic ← Iowa 9 Iowa 11 →

Iowa Highway 10 (Iowa 10) is a state highway that runs across the state of Iowa. It begins where South Dakota Highway 46 crosses the Big Sioux River into Iowa north of Hawarden. It ends east of Havelock at an intersection with Iowa Highway 4.

Route description

Iowa Highway 10 begins by going south towards Hawarden. At Hawarden, it intersects Iowa Highway 12, then turns east. Before entering Orange City, Iowa 10 intersects U.S. Highway 75. After Orange City, it enters Alton, meeting Iowa Highway 60. It continues east through Granville and meets Iowa Highway 143 before entering Paullina. After Paullina, Iowa 10 then runs concurrent for 5 miles (8.0 km) with U.S. Highway 59. They separate and Iowa 10 then enters Sutherland. Iowa 10 turns slightly southeast to go through Peterson, then continues east until intersecting U.S. Highway 71. Iowa 10 then goes south with U.S. 71, passing through Sioux Rapids before turning east again. Iowa 10 then passes through Marathon, Laurens and Havelock before ending at Iowa Highway 4 shortly after Havelock.

History

Iowa Highway 10 was designated as a state highway in 1920. It crossed Iowa from west to east, going from Hawarden to McGregor. It was shortened to Strawberry Point in 1926, then extended to Luxemburg in 1930 and Dubuque in 1939. In 1945, the highway was shortened to Pocahontas and in 1969, was shortened to its current eastern terminus.

Major intersections

County	Location	mi	km	Destinations	Notes
Union	​			SD 46 west	Continuation into South Dakota
Big Sioux River		0.000	0.000	South Dakota–Iowa state line
Sioux	Hawarden	3.787	6.095	Iowa 12 south (Avenue E)
	Sherman–West Branch township line	19.620	31.575	US 75
	Alton	28.650	46.108	Iowa 450 to Iowa 60
O'Brien	Caledonia Township	39.515	63.593	Iowa 143 south
	Union–Liberty township line	48.493	78.042	US 59 north	West end of US 59 overlap
	Liberty Township	53.368	85.887	US 59 south	East end of US 59 overlap
Clay	Douglas Township	74.925	120.580	US 71 north	West end of US 71 overlap
Buena Vista	Barnes–Lee township line	80.113	128.929	US 71 south / CR C16 west	East end of US 71 overlap
Pocahontas	Cummins Township	104.512	168.196	Iowa 4
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Related route

Iowa Highway 450
Location:	Alton
Length:	0.268 mi (0.431 km)

In Alton, Iowa 450 is a route which provides a direct connection between Iowa 10 and Iowa 60. It was designated when Iowa 60 moved onto a four-lane bypass of Alton. Prior to the construction of the bypass, the two routes which Iowa 450 connect intersected in Alton.