Nd Highway 66 over Mauvais Coulee
Towner County, North Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nd Highway 66 over Mauvais Coulee in Towner County, North Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2021, making it 4 years old at the 2025 inventory.
- It carries about 325 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 20 of the 57 inventoried bridges in Towner County rated good (35.1%); 14 (24.6%) are rated poor.
- 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 → (48.63144, -99.20193)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 67 ft |
| Location | East of 281 South |
| NBI structure number | 0066040370 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Dakota department of transportation.
Busiest bridges in Towner County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US Highway 281 over Creek | 1983 | 1,860 | Fair |
| US Highway 281 over Creek | 1983 | 1,690 | Fair |
| Nd Highway 17 over Creek | 1961 | 800 | Fair |
| US Highway 281 over Big Coulee | 2000 | 690 | Good |
| US Highway 281 over Creek | 2000 | 670 | Good |
| Nd Highway 17 over Creek | 1931 | 640 | Poor |
All bridges nearby: Towner County, ND bridge conditions · every bridge in Towner County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.