Irr Bia Rte 2 over Red Lake River
Pennington County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr Bia Rte 2 over Red Lake River in Pennington County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1963, making it 62 years old at the 2025 inventory.
- It carries about 70 vehicles a day (traffic count year 2023).
- It is one of 11 of the 49 inventoried bridges in Pennington County rated fair (22.4%); 1 (2.0%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated September 2023, 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 → (47.99111, -95.58247)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 120 ft |
| Location | West Boundry Red Lake Res |
| NBI structure number | 00000000000F115 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | September 2023 |
| 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 Minnesota department of transportation.
Busiest bridges in Pennington County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 59 over Red Lake River | 1934 | 9,400 | Fair |
| Msas 115 over Red Lake River | 2009 | 6,900 | Fair |
| Mn 1 over Thief River | 1956 | 5,800 | Fair |
| Msas 111 over Red Lake River | 1950 | 5,200 | Fair |
| Mn 32 over Ditch | 1928 | 2,500 | Fair |
| Csah 3 over Red Lake River | 1962 | 2,100 | Fair |
All bridges nearby: Pennington County, MN bridge conditions · every bridge in Pennington County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.