N3140 over Chikaskia River
Kay County, Oklahoma · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- N3140 over Chikaskia River in Kay County, Oklahoma, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 0 (failed condition, out of service) on the 0-9 scale.
- It was built in 1925, making it 100 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 22 of the 419 inventoried bridges in Kay County rated poor (5.3%); 22 (5.3%) 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 September 2023, 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 → (36.96184, -97.40874)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 0 | 0 | Failed condition, out of service |
| Superstructure | 0 | 0 | Failed condition, out of service |
| Substructure | 0 | 0 | Failed condition, out of service |
Bridge details
| Structure | Concrete deck arch |
| Length | about 223 ft |
| Location | .5W 2.6S of US177/KS Line |
| NBI structure number | 016300000000000 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | September 2023 |
| 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 Kay County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-35 over Salt Fk Ark Rvr Oflow | 1959 | 17,500 | Good |
| I-35 over Salt Fk Ark Rvr Oflow | 1962 | 17,500 | Fair |
| I-35 over Salt Fk Ark Rvr Oflow | 1962 | 17,500 | Fair |
| I-35 over Creek | 1959 | 15,700 | Fair |
| I-35 over Creek | 1960 | 15,500 | Fair |
| I-35 over Dry Creek | 1959 | 14,300 | Fair |
All bridges nearby: Kay County, OK bridge conditions · every bridge in Kay County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.