S.H. 20 over Seminole Creek
Mayes County, Oklahoma · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S.H. 20 over Seminole Creek in Mayes County, Oklahoma, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1998, making it 27 years old at the 2025 inventory.
- It carries about 8,100 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 92 of the 233 inventoried bridges in Mayes County rated good (39.5%); 30 (12.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (36.30732, -95.3601)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 200 ft |
| Location | 4.1 Mi E Rogers Co |
| NBI structure number | 257150000000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| 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 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.