Iowa 175 Test Road
Iowa 175 Cores
US 20, Webster County
Site Description US 20, Mile 134.4
Core Descriptions (US 20, Mile 134.4)
US 20 Location 2, Webster County
Core Descriptions (Location 2, Webster County)
US 20, Location 3, Webster County
Core Descriptions (Location 3, Webster County)
Iowa I-35, Story County
Iowa I-80