N1750 over West Red Bluff Creek
Ellis County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- N1750 over West Red Bluff Creek in Ellis County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1946 and reconstructed in 1973, making it 79 years old at the 2025 inventory.
- It carries about 63 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 86 of the 153 inventoried bridges in Ellis County rated fair (56.2%); 0 (0.0%) 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 April 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 → (36.13095, -99.88155)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 33 ft |
| Location | 6.3W .3S of Arnett |
| NBI structure number | 104400000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Ellis County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| S.H. 15 over Creek | 2019 | 3,600 | Good |
| U.S. 270 over Creek | 1972 | 3,000 | Fair |
| S.H. 15 over Boggy Creek | 1996 | 3,000 | Fair |
| S.H. 15 over Creek | 1935 | 2,600 | Good |
| S.H. 15 over Little Wolf Creek | 1996 | 2,400 | Fair |
| S.H. 15 over Buzzard Creek | 1996 | 2,400 | Fair |
All bridges nearby: Ellis County, OK bridge conditions · every bridge in Ellis County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.