S.H. 28 over Grand Lake W. Spillway
Mayes County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S.H. 28 over Grand Lake W. Spillway in Mayes 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 1940, making it 85 years old at the 2025 inventory.
- It carries about 2,400 vehicles a day (traffic count year 2022).
- It is one of 111 of the 233 inventoried bridges in Mayes County rated fair (47.6%); 30 (12.9%) 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 → (36.48058, -95.0115)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 7 | Good condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete girder and floorbeam |
| Length | about 451 ft |
| Location | 16.3 E of Jct U.S. 69 |
| NBI structure number | 296420000000000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Mayes County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Will Rogers Tpi-44 over Osage Creek | 1957 | 16,800 | Good |
| U.S. 412 over U.S. 69 Under | 1987 | 15,200 | Fair |
| Will Rogers Tpi-44 over Bitter Creek | 1957 | 15,000 | Good |
| Will Rogers Tpi-44 over Creek | 1957 | 15,000 | Good |
| Will Rogers Tpi-44 over Little Pryor Creek | 1957 | 15,000 | Good |
| Will Rogers Tpi-44 over Pryor Creek | 1957 | 15,000 | Fair |
All bridges nearby: Mayes County, OK bridge conditions · every bridge in Mayes County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.