Ia 9 over Trout Creek
Winneshiek County, Iowa · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ia 9 over Trout Creek in Winneshiek County, Iowa, 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 1969, making it 56 years old at the 2025 inventory.
- It carries about 5,400 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 155 of the 342 inventoried bridges in Winneshiek County rated fair (45.3%); 57 (16.7%) 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 2022, 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 → (43.24778, -91.70368)
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 127 ft |
| Location | 6.1 mi. E of Jct. U.S. 52 |
| NBI structure number | 000000000052620 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2022 |
| 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 Iowa department of transportation.
Busiest bridges in Winneshiek County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ia 9 over Trout Creek | 1969 | 14,900 | Fair |
| Ia 9 over Division St | 1969 | 8,900 | Fair |
| College Dr over Upper Iowa River | 1987 | 8,868 | Fair |
| US 52 over Dry Run | 1963 | 4,230 | Fair |
| US 52 over Stream & Twin Springs Rd | 1963 | 4,230 | Fair |
| Ia 9 over Dry Run Creek | 1945 | 3,880 | Fair |
All bridges nearby: Winneshiek County, IA bridge conditions · every bridge in Winneshiek County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.