State Highway 58A over Canton L on Aux Channel
Blaine County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- State Highway 58A over Canton L on Aux Channel in Blaine 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 2012, making it 13 years old at the 2025 inventory.
- It carries about 730 vehicles a day (traffic count year 2024).
- It is one of 69 of the 272 inventoried bridges in Blaine County rated fair (25.4%); 19 (7.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated good in the 2024 inventory and is now fair (substructure 7 to 6).
- Its most recent inspection on record is dated March 2024, on a 24-month routine inspection cycle.
- 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 → (36.07939, -98.60421)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 540 ft |
| Location | 2 Mi. N. Canton Ok |
| NBI structure number | CEPSWTOKCANAUXL |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Blaine County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. 270 over Creek | 1937 | 5,100 | Good |
| U.S. 270 over Creek | 1984 | 5,100 | Good |
| U.S. 270 over Creek | 1930 | 5,000 | Good |
| U.S. 270 over N. Canadian River | 1971 | 5,000 | Fair |
| U.S. 270 over N. Canadian River Oflow | 1971 | 5,000 | Good |
| S.H. 3 over Creek | 1984 | 5,000 | Good |
All bridges nearby: Blaine County, OK bridge conditions · every bridge in Blaine County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.