K-15 Highway over North Cottonwood River
Marion County, Kansas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- K-15 Highway over North Cottonwood River in Marion County, Kansas, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2003, making it 22 years old at the 2025 inventory.
- It carries about 1,292 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 125 of the 323 inventoried bridges in Marion County rated good (38.7%); 35 (10.8%) 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 October 2023, 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 → (38.47333, -97.22444)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 409 ft |
| Location | 7.65 Mi N US-56 Jct |
| NBI structure number | 999901500570661 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2023 |
| 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 Marion County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-50 Hwy over Spring Creek | 1994 | 5,402 | Good |
| US-50 Hwy over Doyle Creek Drainage | 1994 | 5,097 | Good |
| US-50 Hwy over Doyle Creek Drainage | 1998 | 5,097 | Good |
| US-50 Hwy over Doyle Creek Drainage | 1998 | 5,097 | Good |
| US-50 Hwy over Doyle Creek Drainage | 1998 | 5,097 | Good |
| US-50 Hwy over Union Pacific RR. | 1994 | 4,812 | Good |
All bridges nearby: Marion County, KS bridge conditions · every bridge in Marion County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.