State Highway 58A over Canton Lake Spillway
Blaine County, Oklahoma · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- State Highway 58A over Canton Lake Spillway in Blaine County, Oklahoma, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1948 and reconstructed in 2017, making it 77 years old at the 2025 inventory.
- It carries about 730 vehicles a day (traffic count year 2024).
- 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 → (36.08171, -98.60235)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 4 | Poor condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Concrete girder and floorbeam |
| Length | about 785 ft |
| Location | 2 Mi N. of Canton |
| NBI structure number | CEPSWTOKCANTONL |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
All bridges nearby: Blaine County, OK bridge conditions · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.