Bridge conditions in Dunn County, North Dakota
73 inventoried bridges · 1 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 73 bridges in Dunn County: 46 rated good, 26 fair, and 1 poor.
- 1 of the 73 bridges in Dunn County, North Dakota, are rated in poor condition (1.4%) in the 2025 National Bridge Inventory, as of .
- 46 bridges (63.0%) are rated good and 26 (35.6%) fair.
- The median Dunn County bridge was built in 1990.
- The busiest poor-rated bridge is Nd Highway 200 over Creek (built 1957), carrying about 570 vehicles a day.
Good 63.0% · Fair 35.6% · Poor 1.4% of 73 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Nd Highway 200 over Creek | 1957 | 570 | Poor |
Busiest bridges in the 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 |
| Nd Highway 22 over Murphy Creek | 1986 | 1,630 | Good |
| Nd Highway 22 over Creek | 1986 | 1,610 | Fair |
| Nd Highway 22 over Crooked Creek | 1952 | 1,510 | Fair |
| Nd Highway 22 over Creek | 1949 | 1,430 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of North Dakota: North Dakota bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.