N3010 over Buffalo Creek
McClain County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- N3010 over Buffalo Creek in McClain County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1990, making it 35 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 132 of the 242 inventoried bridges in McClain County rated fair (54.5%); 11 (4.5%) 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 May 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 → (35.09241, -97.63554)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 77 ft |
| Location | .5e2.5s1e.6s of Blanchard |
| NBI structure number | 225720000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 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 McClain County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-44 over S. Canadian River | 2000 | 45,900 | Fair |
| I-35 over Creek | 1959 | 45,100 | Fair |
| I-35 over Creek | 1959 | 36,300 | Fair |
| I-35 over Creek | 1959 | 36,300 | Fair |
| I-35 NB over S.H. 74 SB Ramp Under | 1967 | 35,900 | Fair |
| I-35 over Creek | 1959 | 35,100 | Good |
All bridges nearby: McClain County, OK bridge conditions · every bridge in McClain County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.