N3690 over Little River
Hughes County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- N3690 over Little River in Hughes 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 1958, making it 67 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 104 of the 208 inventoried bridges in Hughes County rated fair (50.0%); 18 (8.7%) 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 August 2024, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- 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 → (34.99175, -96.44148)
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 through truss |
| Length | about 263 ft |
| Location | 1.6 S of Spaulding |
| NBI structure number | 141780000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Hughes County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. 270 over Creek | 1962 | 5,000 | Fair |
| U.S. 270 over Abandoned R/R Under | 1962 | 5,000 | Good |
| U.S. 270 over Creek | 1962 | 4,400 | Fair |
| S.H. 48 over Creek | 1955 | 4,000 | Good |
| U.S. 270 over Creek | 1962 | 3,800 | Fair |
| U.S. 270 over Coal Creek | 1987 | 3,800 | Good |
All bridges nearby: Hughes County, OK bridge conditions · every bridge in Hughes County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.