US59 K52 Hwy over Sf Little Osage River
Allen County, Kansas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US59 K52 Hwy over Sf Little Osage River in Allen 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 1962, making it 63 years old at the 2025 inventory.
- It carries about 1,642 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 103 of the 227 inventoried bridges in Allen County rated good (45.4%); 25 (11.0%) are rated poor.
- 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 → (37.99361, -95.17028)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 93 ft |
| Location | 4.99 Mi N US54 |
| NBI structure number | 999905900010201 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Allen County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US54 Hwy over Rock Creek | 1969 | 6,854 | Good |
| US-54 Hwy over Rock Creek Overflow | 1998 | 6,854 | Good |
| Old US169 K57 Hwy over Neosho River Drainage | 2002 | 5,500 | Good |
| Old US169 K57 Hwy over Elm Creek | 1948 | 5,500 | Good |
| Old US169 K57 Hwy over Deer Creek Drainage | 1930 | 5,235 | Fair |
| N. Washington Ave. over Coon Creek | 1988 | 5,000 | Fair |
All bridges nearby: Allen County, KS bridge conditions · every bridge in Allen County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.