N4680 over Onion Creek
Sequoyah County, Oklahoma · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- N4680 over Onion Creek in Sequoyah County, Oklahoma, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1992, making it 33 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 9 of the 262 inventoried bridges in Sequoyah County rated poor (3.4%); 9 (3.4%) 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 June 2023, on a 24-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (35.36244, -94.69076)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 4 | 4 | Poor condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 26 ft |
| Location | 1.8D of SH141ATGANS |
| NBI structure number | 274680000000000 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | June 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Sequoyah County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. 64 over Ark River & R.R./ Co.rd. | 1973 | 32,947 | Fair |
| I-40 WB over U.S. 64 Under | 2020 | 23,340 | Good |
| I-40 EB over U.S. 64 Under | 2020 | 23,340 | Fair |
| I-40 WB over Little Sallisaw Creek | 2020 | 23,340 | Good |
| I-40 EB over Little Sallisaw Creek | 2020 | 23,340 | Good |
| I-40 over Farm Rd Under | 1967 | 19,600 | Fair |
All bridges nearby: Sequoyah County, OK bridge conditions · every bridge in Sequoyah County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.