Cth Oo (winnebago over Ih 41

Fond du Lac County, Wisconsin · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

• Cth Oo (winnebago over Ih 41 in Fond du Lac County, Wisconsin, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
• It was built in 1973 and reconstructed in 2009, making it 52 years old at the 2025 inventory.
• It carries about 4,300 vehicles a day (traffic count year 2023).
• Its listed owner is the state highway agency.
• It is one of 98 of the 252 inventoried bridges in Fond du Lac County rated fair (38.9%); 27 (10.7%) are rated poor.
• A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

View this bridge on a map → (43.80667, -88.49833)

Component ratings

Bridge details

Source: FHWA National Bridge Inventory, 2025 data as reported by the Wisconsin department of transportation.

Busiest bridges in Fond du Lac County

All bridges nearby: Fond du Lac County, WI bridge conditions · every bridge in Fond du Lac County · Wisconsin bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.