Irrft County Hiway over Creek
Nelson County, North Dakota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irrft County Hiway over Creek in Nelson County, North Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1980, making it 45 years old at the 2025 inventory.
- It carries about 30 vehicles a day (traffic count year 2017).
- Its listed owner is the county highway agency.
- It is one of 12 of the 23 inventoried bridges in Nelson County rated fair (52.2%); 4 (17.4%) 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 August 2024, 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 → (47.75933, -98.45997)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete tee beam |
| Length | about 25 ft |
| Location | 4 South 1 West of Tolna |
| NBI structure number | 000000032104300 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Dakota department of transportation.
Busiest bridges in Nelson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US Highway 2 over Bnrr Sep over | 2023 | 1,685 | Good |
| US Highway 2 over Bnrr Sep over | 1983 | 1,455 | Fair |
| Nd Highway 15 over Creek | 1931 | 510 | Fair |
| Nd Highway 1 over Sheyenne River | 1964 | 300 | Poor |
| County Highway over Forest River | 1978 | 166 | Fair |
| County Highway over Sheyenne River | 1975 | 150 | Fair |
All bridges nearby: Nelson County, ND bridge conditions · every bridge in Nelson County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.