Iowa Highway 188 | ||||
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Route information | ||||
Maintained by Iowa DOT | ||||
Length: | 24.231 mi (38.996 km) | |||
Existed: | 1945 – present | |||
Major junctions | ||||
South end: | Iowa 3 near Clarksville | |||
East end: | US 63 near Tripoli | |||
Location | ||||
Counties: | ||||
Highway system | ||||
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Iowa Highway 188 (Iowa 188) is a state highway in north-central Iowa. The route is signed both north-south and east-west because of a 90-degree corner near the route's midpoint. The route begins at Iowa Highway 3 south of Clarksville and ends at U.S. Route 63 near Tripoli.
Iowa Highway 188 begins at a T intersection with Iowa Highway 3 2 1⁄2 miles (4.0 km) south of Clarksville. From Iowa 3, Iowa 188 heads north where it crosses the Shell Rock River and forms the eastern boundary of Heery Woods State Park. It passes through Clarksville and continues north for 4 miles (6.4 km). At four-way intersection with Butler County Road T64 and a gravel road, Iowa 188 turns to the east and becomes an east–west road for the remainder of its journey.
Iowa 188 heads east for 6 miles (9.7 km) where it crosses into Bremer County one mile (1.6 km) west of Plainfield. One half-mile (0.8 km) into Bremer County, is a diamond interchange with U.S. Route 218 and Iowa Highway 27, the Avenue of the Saints highway. In Plainfield, Iowa 188 crosses over the Cedar River. It continues due east for 10 miles (16 km), ending at U.S. Route 63 north of Tripoli.