Iowa Highway 21

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Iowa Highway 21 marker

Iowa Highway 21
Route information
Maintained by Iowa DOT
Length: 97.152 mi[1] (156.351 km)
Major junctions
South end: Iowa 149 near Hedrick
 
North end: US 20 / Iowa 27 at Waterloo
Location
Counties:
Highway system
US 20 Iowa 22

Iowa Highway 21 (Iowa 21) is a state highway that runs from north to south in central Iowa. It has a length of 97 miles (156 km). Iowa 21 begins at Iowa 149 west of Hedrick and ends at a freeway interchange with U.S. Highway 20 (US 20) in Waterloo.

Route description[edit]

Iowa 21 begins one mile (1.6 km) west of Hedrick and goes north through Delta before intersecting Iowa 92. It proceeds through What Cheer before intersecting Iowa 22 west of Thornburg. It continues north to Deep River where it intersects Iowa 85. After passing through Guernsey, it then intersects Interstate 80, then meets US 6. It overlaps with U.S. 6 going eastward, then turns north near Victor. It then intersects Iowa 212 before entering Belle Plaine, then intersects US 30. It goes north to Dysart, where it turns west, overlapping with Iowa 8. It then turns north and ends at US 20 at the southern city limit of Waterloo.

History[edit]

The current version of Iowa 21 is the second occurrence of the route number in the state. The first one went north from Ida Grove to the Minnesota border and was eventually replaced by US 59.

The current Iowa 21 was created in October 1934 and went between Victor and Dysart. It was extended south in 1939 to from Victor to Iowa 92, north from Dysart to U.S. 20 in Waterloo in 1969, and south again from Iowa 92 to Iowa 149 in 1980.

Major intersections[edit]

County Location mi[1] km Destinations Notes
Keokuk Van BurenPlank
township line
0.000 0.000 Iowa 149
Delta 12.314 19.817 Iowa 92
Thornburg 20.311 32.687 Iowa 22 east
Poweshiek Deep River Township 28.958 46.603 Iowa 85 west / CR F52 east
Warren Township 37.115 59.731 I-80
40.619 65.370 US 6 west South end of US 6 overlap
Iowa Hartford Township 44.852 72.182 US 6 east North end of US 6 overlap
Honey Creek Township 52.030 83.734 Iowa 212 east
TamaBenton
county line
YorkKane
township line
60.801 97.850 US 30
Dysart 75.773 121.945 Iowa 8 east / CR V37 north South end of Iowa 8 overlap
Tama Clark Township 76.262 122.732 Iowa 8 west North end of Iowa 8 overlap
Black Hawk Waterloo 97.152 156.351 US 20 / Iowa 27
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References[edit]

Route map: Bing