Loc 170TH St over Drainage Ditch No 9
Kossuth County, Iowa · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Loc 170TH St over Drainage Ditch No 9 in Kossuth County, Iowa, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1977, making it 48 years old at the 2025 inventory.
- It carries about 21 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 40 of the 266 inventoried bridges in Kossuth County rated poor (15.0%); 40 (15.0%) 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.
View this bridge on a map → (43.0096, -94.33831)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Concrete slab |
| Length | about 32 ft |
| Location | 095303601 |
| NBI structure number | 000000000215011 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Kossuth County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 169 over E Fork Des Moines River | 2008 | 7,500 | Good |
| US 18 over E Fork Des Moines River | 1984 | 5,900 | Good |
| US 18 over Drainage Ditch | 1993 | 4,660 | Good |
| US 169 over E Fork Des Moines River | 1971 | 3,460 | Fair |
| US 169 over Drainage Ditch | 1985 | 2,880 | Good |
| US 169 over E Fork Des Moines River | 1971 | 2,880 | Fair |
All bridges nearby: Kossuth County, IA bridge conditions · every bridge in Kossuth County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.