N4050 over Creek
Tulsa County, Oklahoma · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- N4050 over Creek in Tulsa 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 1960, making it 65 years old at the 2025 inventory.
- It carries about 455 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 64 of the 1,140 inventoried bridges in Tulsa County rated poor (5.6%); 64 (5.6%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated July 2023, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- 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 → (35.92838, -95.79717)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Steel girder and floorbeam |
| Length | about 29 ft |
| Location | 161ST E. Ave. .1S of 161S |
| NBI structure number | 147540000000000 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
| Fracture critical (item 92A) | Yes |
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.