Irr Bia Rte 5 over Wood Duck Creek
Koochiching County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr Bia Rte 5 over Wood Duck Creek in Koochiching County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1993, making it 32 years old at the 2025 inventory.
- It carries about 20 vehicles a day (traffic count year 2023).
- It is one of 41 of the 98 inventoried bridges in Koochiching County rated fair (41.8%); 6 (6.1%) 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 → (48.15673, -93.13901)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Timber slab |
| Length | about 32 ft |
| Location | 10 Km North of Hwy 65 |
| NBI structure number | 00000000000F215 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Koochiching County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 11 over Stream | 1949 | 5,227 | Fair |
| Mn 11 over Dwp RR | 2018 | 3,565 | Good |
| US 53 over Rat Root River | 1976 | 2,833 | Fair |
| Mn 11 over Jack Fish Bay | 2012 | 2,016 | Good |
| Mn 11 over Tilson Creek | 2012 | 2,016 | Good |
| US 53 over E Br Rat Root River | 1964 | 1,733 | Good |
All bridges nearby: Koochiching County, MN bridge conditions · every bridge in Koochiching County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.