US77 Hwy over Little Walnut River
Butler County, Kansas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US77 Hwy over Little Walnut River in Butler County, Kansas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1949 and reconstructed in 2003, making it 76 years old at the 2025 inventory.
- It carries about 3,068 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 201 of the 591 inventoried bridges in Butler County rated fair (34.0%); 38 (6.4%) 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 → (37.54472, -96.99167)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 387 ft |
| Location | 4.94 Mi N Cowley Coln |
| NBI structure number | 999907700080301 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Butler County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US77 Hwy over W Br Walnut Riv/ped Pass | 1935 | 13,087 | Good |
| 54/400 Hwy Eb/wb over Republican Creek | 1955 | 10,250 | Good |
| W Central Ave over Lakeside Drainage | 1998 | 9,925 | Good |
| US54/US400 Hwy WB over Dry Creek | 1955 | 9,799 | Good |
| US54/US400 Hwy EB over Dry Creek | 1960 | 9,799 | Good |
| US54/US400 Hwy WB over Whitewater River | 1955 | 9,799 | Fair |
All bridges nearby: Butler County, KS bridge conditions · every bridge in Butler County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.