US Highway 12 over Flat Creek
Adams County, North Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US Highway 12 over Flat Creek in Adams 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 2007, making it 18 years old at the 2025 inventory.
- It carries about 1,180 vehicles a day (traffic count year 2019).
- Its listed owner is the state highway agency.
- It is one of 16 of the 44 inventoried bridges in Adams County rated good (36.4%); 5 (11.4%) 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 → (46.01582, -102.68687)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 46 ft |
| Location | 2 West Jct. Nd 8 South |
| NBI structure number | 0012071149 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Dakota department of transportation.
Busiest bridges in Adams County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Nd Highway 8 over Flat Creek | 1959 | 1,730 | Fair |
| US Highway 12 over Flat Creek | 1941 | 1,370 | Fair |
| US Highway 12 over Creek | 2007 | 1,180 | Good |
| US Highway 12 over Flat Creek | 2007 | 1,180 | Good |
| US Highway 12 over BNSF Railroad | 2000 | 675 | Fair |
| Nd Highway 22 over Cedar Creek | 1957 | 550 | Fair |
All bridges nearby: Adams County, ND bridge conditions · every bridge in Adams County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.