N3160 over Cottonwood Creek
Carter County, Oklahoma · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- N3160 over Cottonwood Creek in Carter County, Oklahoma, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1938, making it 87 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 16 of the 337 inventoried bridges in Carter County rated poor (4.7%); 16 (4.7%) are rated poor.
- 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 → (34.25771, -97.36961)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Concrete slab |
| Length | about 21 ft |
| Location | 7E & 3.2 S Jct SH76 & 53W |
| NBI structure number | 057390000000000 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Carter County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-35 over Sewer Creek | 1965 | 32,700 | Fair |
| I-35 over Creek | 1965 | 32,400 | Fair |
| I-35 over Creek | 1965 | 32,200 | Fair |
| I-35 over Creek | 1965 | 31,200 | Good |
| I-35 over Tulip Creek | 1968 | 30,800 | Good |
| I-35 over Tulip Creek | 1968 | 30,800 | Good |
All bridges nearby: Carter County, OK bridge conditions · every bridge in Carter County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.