Bridge conditions in Billings County, North Dakota
60 inventoried bridges · 2 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 60 bridges in Billings County: 37 rated good, 21 fair, and 2 poor.
- 2 of the 60 bridges in Billings County, North Dakota, are rated in poor condition (3.3%) in the 2025 National Bridge Inventory, as of .
- 37 bridges (61.7%) are rated good and 21 (35.0%) fair.
- The median Billings County bridge was built in 1983.
- The busiest poor-rated bridge is Interstate 94 over Sheep Creek (built 1964), carrying about 1,300 vehicles a day.
Good 61.7% · Fair 35.0% · Poor 3.3% of 60 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 |
|---|---|---|---|
| Interstate 94 over Sheep Creek | 1964 | 1,300 | Poor |
| Upper Magpie Road over North Creek | 1916 | 10 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 94 over Sheep Creek | 1964 | 2,600 | Fair |
| Interstate 94 over West River Rd. Int. | 1968 | 1,525 | Fair |
| Interstate 94 over West River Rd. Int. | 1968 | 1,525 | Fair |
| Interstate 94 over Little Missouri R. | 1964 | 1,300 | Fair |
| Interstate 94 over Little Missouri R. | 1964 | 1,300 | Fair |
| Interstate 94 over Sheep Creek | 1964 | 1,300 | Fair |
| Interstate 94 over Sheep Creek | 1964 | 1,300 | Poor |
| US Highway 85 over South Branch Green River | 1971 | 1,210 | Good |
| US Highway 85 over South Fork Green River | 1940 | 1,090 | Fair |
| US Highway 85 over North Fork Green River | 1971 | 1,060 | 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.