Irr N3570 over Branch Creek
Pawnee County, Oklahoma · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr N3570 over Branch Creek in Pawnee County, Oklahoma, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 0 (failed condition, out of service) on the 0-9 scale.
- It was built in 2000, making it 25 years old at the 2025 inventory.
- It carries about 75 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.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated July 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 → (36.25139, -96.63944)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 0 | 0 | Failed condition, out of service |
Bridge details
| Structure | Steel culvert |
| Length | about 24 ft |
| Location | 1.3N 4W of Hallet |
| NBI structure number | 307610000000000 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | July 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 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.