K3 Hwy over S Fk Marmaton River
Bourbon County, Kansas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- K3 Hwy over S Fk Marmaton River in Bourbon County, Kansas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1940, making it 85 years old at the 2025 inventory.
- It carries about 441 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 87 of the 205 inventoried bridges in Bourbon County rated fair (42.4%); 29 (14.1%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (37.69778, -94.96972)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 97 ft |
| Location | 1.58 Mi N Crawford Coln |
| NBI structure number | 999900300060241 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Bourbon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US69 K7 Hwy SB over URB1304 National Ave | 1967 | 7,250 | Good |
| US69 K7 Hwy NB over URB1304 National Ave | 1967 | 7,250 | Good |
| US54 US69 K7 Hwy over Marmaton River | 1967 | 4,910 | Good |
| US54 US69 K7 Hwy over Sycamore St | 1967 | 4,910 | Good |
| US54 US69 K7 Hwy over Mkt Abandoned RR | 1967 | 4,910 | Good |
| US54 US69 K7 Hwy over BN RR (Abandoned) | 1967 | 4,910 | Good |
All bridges nearby: Bourbon County, KS bridge conditions · every bridge in Bourbon County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.