U.S. 64 over Unnamed Creek
Harper County, Oklahoma · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- U.S. 64 over Unnamed Creek in Harper County, Oklahoma, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2017, making it 8 years old at the 2025 inventory.
- It carries about 1,200 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 41 of the 128 inventoried bridges in Harper County rated good (32.0%); 2 (1.6%) are rated poor.
- 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 → (36.82698, -99.63157)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 38 ft |
| Location | .08 W of Jctu.s. 183 |
| NBI structure number | 313660000000000 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Harper County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. 183 over Creek | 2003 | 4,900 | Good |
| U.S. 270 over Creek | 1932 | 3,100 | Fair |
| U.S. 270 over Creek | 1932 | 3,100 | Good |
| U.S. 270 over Creek | 1932 | 3,100 | Fair |
| U.S. 270 over Sand Creek | 1987 | 3,100 | Fair |
| U.S. 270 over Creek | 1932 | 3,000 | Good |
All bridges nearby: Harper County, OK bridge conditions · every bridge in Harper County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.