Co. Rd. N3300 over I-40 Under
Pottawatomie County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Co. Rd. N3300 over I-40 Under in Pottawatomie County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1960, making it 65 years old at the 2025 inventory.
- It carries about 400 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 296 of the 408 inventoried bridges in Pottawatomie County rated fair (72.5%); 25 (6.1%) 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 → (35.38389, -97.12482)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 171 ft |
| Location | 1 Mi E Ok C/l |
| NBI structure number | 151400000000000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Pottawatomie County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-40 WB over Old U.S. 270 Under | 2018 | 38,000 | Good |
| I-40 EB over Old U.S. 270 Under | 2018 | 38,000 | Good |
| I-40 over Creek | 1961 | 34,400 | Fair |
| I-40 over Deer Creek | 2007 | 34,400 | Good |
| I-40 over Creek | 1962 | 27,900 | Fair |
| I-40 over Creek | 1963 | 20,500 | Fair |
All bridges nearby: Pottawatomie County, OK bridge conditions · every bridge in Pottawatomie County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.