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Iowa Highway 188

Iowa Highway 188 marker

Iowa Highway 188
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
Iowa 187 Iowa 191

Iowa Highway 188 marker

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 12 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.


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