80th St SW over Corral Creek
Bowman County, North Dakota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 80th St SW over Corral Creek in Bowman County, North Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1984, making it 41 years old at the 2025 inventory.
- It carries about 25 vehicles a day (traffic count year 2019).
- Its listed owner is the county highway agency.
- It is one of 22 of the 69 inventoried bridges in Bowman County rated fair (31.9%); 3 (4.3%) 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 October 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (46.26785, -103.99173)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete tee beam |
| Length | about 49 ft |
| Location | 3 West 2 South Marmarth |
| NBI structure number | 000000006103010 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 7: scour countermeasures installed |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Dakota department of transportation.
Busiest bridges in Bowman County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US Highway 85 over BNSF Railroad Sep | 2000 | 3,250 | Good |
| US Highway 85 over Creek | 1966 | 1,130 | Fair |
| US Highway 85 over Spring Creek | 1953 | 1,070 | Poor |
| US Highway 85 over Creek | 1966 | 1,050 | Good |
| US Highway 85 over Creek | 1966 | 1,050 | Fair |
| US Highway 85 over Creek | 1966 | 1,030 | Fair |
All bridges nearby: Bowman County, ND bridge conditions · every bridge in Bowman County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.