E0520 over Cow Creek
Noble County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- E0520 over Cow Creek in Noble County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1933, making it 92 years old at the 2025 inventory.
- It carries about 25 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 213 of the 342 inventoried bridges in Noble County rated fair (62.3%); 12 (3.5%) are rated poor.
- 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 → (36.26064, -97.30693)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Concrete slab |
| Length | about 40 ft |
| Location | 1.1E 1S I35/US77 |
| NBI structure number | 039530000000000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Noble County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-35 over Creek | 1960 | 17,600 | Fair |
| I-35 over Hackberry Creek | 1960 | 17,600 | Fair |
| I-35 over Creek | 1960 | 17,100 | Good |
| I-35 over Creek | 1960 | 17,100 | Fair |
| I-35 over Red Rock CR Oflow & Rd | 1960 | 17,100 | Fair |
| I-35 over Doe Creek | 1960 | 17,100 | Fair |
All bridges nearby: Noble County, OK bridge conditions · every bridge in Noble County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.