N4270 over Chouteau Creek
Mayes County, Oklahoma · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- N4270 over Chouteau Creek in Mayes County, Oklahoma, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 2 (critical condition) on the 0-9 scale.
- It was built in 1945, making it 80 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 30 of the 233 inventoried bridges in Mayes County rated poor (12.9%); 30 (12.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated September 2024, on a 6-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 2): scour critical: extensive scour observed, foundations unstable.
- 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 → (36.22254, -95.40466)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 2 | 2 | Critical condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 46 ft |
| Location | 5.5NW of 412 and 69 |
| NBI structure number | 102620000000000 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 6 months |
| Scour (item 113) | 2: scour critical: extensive scour observed, foundations unstable |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Mayes County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Will Rogers Tpi-44 over Osage Creek | 1957 | 16,800 | Good |
| U.S. 412 over U.S. 69 Under | 1987 | 15,200 | Fair |
| Will Rogers Tpi-44 over Bitter Creek | 1957 | 15,000 | Good |
| Will Rogers Tpi-44 over Creek | 1957 | 15,000 | Good |
| Will Rogers Tpi-44 over Little Pryor Creek | 1957 | 15,000 | Good |
| Will Rogers Tpi-44 over Pryor Creek | 1957 | 15,000 | Fair |
All bridges nearby: Mayes County, OK bridge conditions · every bridge in Mayes County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.