Irr Bia Rte 18 over Wild Rice Lake River
Clearwater County, Minnesota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr Bia Rte 18 over Wild Rice Lake River in Clearwater County, Minnesota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2006, making it 19 years old at the 2025 inventory.
- It carries about 30 vehicles a day (traffic count year 2023).
- It is one of 24 of the 50 inventoried bridges in Clearwater County rated good (48.0%); 0 (0.0%) 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 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (47.38169, -95.49353)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 71 ft |
| Location | Lower Rice Lake Dam |
| NBI structure number | 00000000000F217 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| 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 Clearwater County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 1 over Sandy River | 2010 | 3,300 | Good |
| US 2 over Clearwater River | 1966 | 2,808 | Fair |
| Mn 92 over Clearwater River | 1942 | 2,750 | Fair |
| US 2 over Clearwater River | 1988 | 2,474 | Fair |
| Mn 92 over Silver Creek | 1930 | 1,350 | Fair |
| Mn 92 over Wild Rice River | 1977 | 1,125 | Fair |
All bridges nearby: Clearwater County, MN bridge conditions · every bridge in Clearwater County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.