K7 Hwy over Thunderbolt Creek
Crawford County, Kansas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- K7 Hwy over Thunderbolt Creek in Crawford County, Kansas, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2010, making it 15 years old at the 2025 inventory.
- It carries about 5,181 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 149 of the 295 inventoried bridges in Crawford County rated good (50.5%); 27 (9.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: culvert 8 to 7.
- Its most recent inspection on record is dated February 2024, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (37.48056, -94.84139)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 8 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 44 ft |
| Location | 9.97 Mi N US-400 |
| NBI structure number | 999900700190851 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Crawford County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US69/US169 Hwy over Cow Creek | 1992 | 14,286 | Good |
| US69/US169 Hwy over Cow Creek | 1993 | 9,347 | Good |
| K-126 over KCS Railway | 2022 | 7,622 | Good |
| K126 Hwy over Middle Cow Creek | 1931 | 6,653 | Fair |
| K126 Hwy over Middle Cow Creek | 2021 | 6,653 | Good |
| US69 over First Cow Creek Drainage | 1952 | 6,144 | Good |
All bridges nearby: Crawford County, KS bridge conditions · every bridge in Crawford County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.