I-35 over Salt Fk Ark Rvr Oflow
Kay County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-35 over Salt Fk Ark Rvr Oflow in Kay County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1962, making it 63 years old at the 2025 inventory.
- It carries about 17,500 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 268 of the 419 inventoried bridges in Kay County rated fair (64.0%); 22 (5.3%) 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 → (36.67327, -97.34559)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 71 ft |
| Location | 5.4 Mi N Noble C/l |
| NBI structure number | 143550000000000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Kay County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-35 over Salt Fk Ark Rvr Oflow | 1959 | 17,500 | Good |
| I-35 over Salt Fk Ark Rvr Oflow | 1962 | 17,500 | Fair |
| I-35 over Creek | 1959 | 15,700 | Fair |
| I-35 over Creek | 1960 | 15,500 | Fair |
| I-35 over Dry Creek | 1959 | 14,300 | Fair |
| U.S. 77 over Creek | 1958 | 10,300 | Fair |
All bridges nearby: Kay County, OK bridge conditions · every bridge in Kay County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.