N4488 over Blackbird Creek
Cherokee County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- N4488 over Blackbird Creek in Cherokee 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 1995, making it 30 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 110 of the 205 inventoried bridges in Cherokee County rated fair (53.7%); 21 (10.2%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated July 2024, on a 12-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 → (36.05992, -95.01507)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 40 ft |
| Location | 3.2 W & 1.9 N of Moody |
| NBI structure number | 239240000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | July 2024 |
| Inspection interval (item 91) | 12 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 Cherokee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| E0760 (downing) over Tahlequah Creek | 1968 | 15,100 | Fair |
| U.S. 62 over Creek | 1957 | 12,700 | Fair |
| U.S. 62 over Goodman Creek | 1958 | 12,700 | Fair |
| Fau 3355(MSK. Ave over Ross Branch Creek | 1957 | 12,000 | Fair |
| U.S. 62 over Zeb Branch Creek | 1958 | 10,000 | Fair |
| U.S. 62 over Creek | 1958 | 10,000 | Fair |
All bridges nearby: Cherokee County, OK bridge conditions · every bridge in Cherokee County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.