Cth K over Ridgeway Branch
Iowa County, Wisconsin · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cth K over Ridgeway Branch in Iowa 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 1983, making it 42 years old at the 2025 inventory.
- It carries about 506 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 58 of the 209 inventoried bridges in Iowa County rated fair (27.8%); 11 (5.3%) 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 July 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 → (42.94014, -89.92067)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 73 ft |
| Location | 0.1M S Jct Cth H to W |
| NBI structure number | B25003000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 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 Iowa County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ush 18-ush 151 over Br Dodge Branch | 1979 | 14,600 | Fair |
| Ush 18 Eb-ush 151 over Cth Id | S. Jones Street | 1988 | 7,850 | Fair |
| Ush 18 Wb-ush 151 over Lrd S Jones St | 1983 | 7,850 | Fair |
| Ush 18 EB / Ush 15 over Lrd Ridgevue Rd | 2018 | 7,650 | Good |
| Ush 18 WB / Ush 15 over Lrd Ridgevue Road | 2018 | 7,650 | Good |
| Ush 18 Wb-ush 151 over Cth H | 1982 | 7,600 | Fair |
All bridges nearby: Iowa County, WI bridge conditions · every bridge in Iowa County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.