E0450 over Harper Creek
Pawnee County, Oklahoma · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- E0450 over Harper Creek in Pawnee County, Oklahoma, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1932, making it 93 years old at the 2025 inventory.
- It carries about 24 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 32 of the 174 inventoried bridges in Pawnee County rated poor (18.4%); 32 (18.4%) are rated poor.
- 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 → (36.36242, -96.60765)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 4 | Poor condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Steel through truss |
| Length | about 45 ft |
| Location | .6W .7S of Blackburn |
| NBI structure number | 036630000000000 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Pawnee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. 64 over Arkansas River | 1963 | 16,000 | Fair |
| U.S. 64 over Cedar Creek | 2021 | 8,734 | Good |
| Cimarron Tp over Creek | 1973 | 8,600 | Good |
| Cimarron Tp over No Name Creek | 1973 | 8,600 | Fair |
| Cimarron Tp over BNSF R.R. | 1973 | 8,600 | Fair |
| Cimarron Tp over Cowskin Creek | 1973 | 8,600 | Good |
All bridges nearby: Pawnee County, OK bridge conditions · every bridge in Pawnee County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.