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Cth Bb over Tainter Lake

Dunn County, Wisconsin · rated Poor in the 2025 National Bridge Inventory

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

Cth Bb over Tainter Lake in Dunn County, Wisconsin, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 3 (serious condition) on the 0-9 scale.
It was built in 1935, making it 90 years old at the 2025 inventory.
It carries about 2,234 vehicles a day (traffic count year 2024).
Its listed owner is the county highway agency.
It is one of 20 of the 244 inventoried bridges in Dunn County rated poor (8.2%); 20 (8.2%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings

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

Bridge	Built	Vehicles/day	Condition
Ih 94 over Br Muddy Creek	1958	37,900	Fair
Ih 94 over Muddy Creek	1959	37,900	Fair
Ih 94 over E Br Wilson Creek	1959	35,500	Poor
Ih 94 over E Br Muddy Creek	1959	31,900	Fair
Ih 94 WB over Elk Mound Marsh Equalizr	1958	18,950	Fair
Ih 94 EB over Elk Mound Marsh Equalizr	1958	18,950	Fair