Cth K over Dorn Creek
Dane County, Wisconsin · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cth K over Dorn Creek in Dane County, Wisconsin, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1956, making it 69 years old at the 2025 inventory.
- It carries about 8,400 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 273 of the 593 inventoried bridges in Dane County rated fair (46.0%); 42 (7.1%) 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 → (43.14819, -89.473)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Steel culvert |
| Length | about 27 ft |
| Location | 0.1M W Jct Cth Q |
| NBI structure number | P13092100000000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wisconsin department of transportation.
Busiest bridges in Dane County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ush 12/18-w Beltli over Cmstpp RR | 1975 | 131,000 | Good |
| Ush 12/14/18/151 over Lrd Todd Dr | 1971 | 129,000 | Fair |
| Ush 12/18-s Beltli over Drainage Ditch | 1988 | 117,000 | Fair |
| Ih 39/90/94 over Starkweather Creek | 1959 | 109,000 | Fair |
| Ush 12/18 over Br Yahara River | 1962 | 86,700 | Fair |
| Ush 12/18 over Drainage Ditch | 1987 | 86,700 | Fair |
All bridges nearby: Dane County, WI bridge conditions · every bridge in Dane County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.