Cth V over Rowan Creek at Lake Wisc
Columbia County, Wisconsin · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cth V over Rowan Creek at Lake Wisc in Columbia County, Wisconsin, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1970, making it 55 years old at the 2025 inventory.
- It carries about 990 vehicles a day (traffic count year 2021).
- Its listed owner is the county highway agency.
- It is one of 119 of the 182 inventoried bridges in Columbia County rated fair (65.4%); 17 (9.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated September 2024, on a 24-month routine inspection cycle.
- 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 → (43.39658, -89.52149)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete slab |
| Length | about 48 ft |
| Location | 0.5M N Jct Cth Cs |
| NBI structure number | B11002000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wisconsin department of transportation.
Busiest bridges in Columbia County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ih 39 Sb-90 Eb-ih over Sth 60 | 2024 | 30,150 | Good |
| Ih 90 Eb-ih 94 EB over Lrd Smokey Hollow Rd | 1961 | 29,350 | Fair |
| Ih 90 Wb-ih 94 WB over Br Rowan Creek | 1961 | 29,350 | Fair |
| Ih 90 Wb-ih 94 WB over Br Rowan Creek | 1961 | 29,350 | Fair |
| Ih 90 Wb-ih 94 WB over Br Rowan Creek | 1961 | 29,350 | Fair |
| Ih 90 Wb-ih 94 WB over Br Rowan Creek | 1961 | 29,350 | Fair |
All bridges nearby: Columbia County, WI bridge conditions · every bridge in Columbia County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.