Fau 8340 (21 St.) over Arkansas Riv./riverside
Tulsa County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Fau 8340 (21 St.) over Arkansas Riv./riverside in Tulsa County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1984, making it 41 years old at the 2025 inventory.
- It carries about 14,000 vehicles a day (traffic count year 2022).
- Its listed owner is a city or municipal highway agency.
- It is one of 546 of the 1,140 inventoried bridges in Tulsa County rated fair (47.9%); 64 (5.6%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 5 to 6.
- Its most recent inspection on record is dated September 2023, 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 → (36.13033, -95.99491)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 1,734 ft |
| Location | 100 W. 21ST St. |
| NBI structure number | 208660000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Tulsa County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| S Mingo Rd over Haikey Creek West Branch | 2022 | 181,800 | Good |
| U.S. 169 over Mingo Creek | 1976 | 123,200 | Fair |
| U.S. 169 over Mingo Creek | 1976 | 123,200 | Good |
| U.S. 169 over S.H. 51 Under | 1976 | 123,200 | Fair |
| U.S. 169 over E 61 St S Under | 1988 | 123,200 | Fair |
| U.S. 169 over Creek | 1963 | 116,300 | Good |
All bridges nearby: Tulsa County, OK bridge conditions · every bridge in Tulsa County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.