S.H. 66 over Slwc R.R. Under
Lincoln County, Oklahoma · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S.H. 66 over Slwc R.R. Under in Lincoln County, Oklahoma, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1926 and reconstructed in 1956, making it 99 years old at the 2025 inventory.
- It carries about 7,800 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- 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 → (35.70689, -96.8796)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 7 | Good condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 110 ft |
| Location | SH 66; 0.9 Mi E Jct SH 18 |
| NBI structure number | 017510000000000 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
All bridges nearby: Lincoln County, OK bridge conditions · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.