County Hiway over Little Knife River
Dunn County, North Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Hiway over Little Knife River in Dunn County, North Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2011, making it 14 years old at the 2025 inventory.
- It carries about 30 vehicles a day (traffic count year 2018).
- Its listed owner is the county highway agency.
- It is one of 46 of the 73 inventoried bridges in Dunn County rated good (63.0%); 1 (1.4%) 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 June 2021, on a 48-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 → (47.32043, -102.96879)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 8 | 8 | Very good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 20 ft |
| Location | 10 West 3 South Killdeer |
| NBI structure number | 000000013106340 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2021 |
| Inspection interval (item 91) | 48 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 North Dakota department of transportation.
Busiest bridges in Dunn County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Nd Highway 200 over Spring Creek | 2017 | 3,700 | Good |
| Nd Highway 200 over Spring Creek | 2016 | 2,980 | Good |
| Nd Highway 22 over Spring Creek | 1986 | 2,420 | Fair |
| Nd Highway 22 over Jim Creek | 2011 | 2,175 | Good |
| Nd Highway 22 over Russian Spring Creek | 1953 | 1,740 | Fair |
| Nd Highway 22 over Creek | 1986 | 1,680 | Good |
All bridges nearby: Dunn County, ND bridge conditions · every bridge in Dunn County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.