5646C over Deep Fork River
Okmulgee County, Oklahoma · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 5646C over Deep Fork River in Okmulgee County, Oklahoma, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1982, making it 43 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 54 of the 311 inventoried bridges in Okmulgee County rated poor (17.4%); 54 (17.4%) 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 September 2024, on a 24-month routine inspection cycle.
- 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 → (35.67463, -96.06873)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Prestressed concrete tee beam |
| Length | about 165 ft |
| Location | 6.7 NE SH56 |
| NBI structure number | 202950000000000 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Okmulgee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. 75 over Negro Creek | 1957 | 18,900 | Fair |
| U.S. 75 over Eagle Creek | 1957 | 18,500 | Fair |
| U.S. 75 over Adams Creek | 1957 | 18,000 | Fair |
| U.S. 75 over Flat Rock Creek | 1957 | 17,500 | Fair |
| I-40 over Coal Creek | 1963 | 16,000 | Fair |
| U.S. 62/US 75 SB over Burgess Creek | 2017 | 16,000 | Good |
All bridges nearby: Okmulgee County, OK bridge conditions · every bridge in Okmulgee County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.