SE 30 Rd over Silver Creek
Harper County, Kansas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SE 30 Rd over Silver Creek in Harper County, Kansas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1957, making it 68 years old at the 2025 inventory.
- It carries about 80 vehicles a day (traffic count year 2021).
- Its listed owner is the county highway agency.
- It is one of 242 of the 373 inventoried bridges in Harper County rated fair (64.9%); 32 (8.6%) 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 → (37.10961, -97.92508)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 120 ft |
| Location | 2.5N 2.8W of Bluff City |
| NBI structure number | 000390755206980 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Harper County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| K2 Hwy over Spring Creek Drainage | 1959 | 3,406 | Good |
| K-2 Hwy over East Sand Creek Drainage | 1992 | 2,657 | Good |
| K2 Hwy over East Sand Creek Drainage | 1937 | 2,616 | Good |
| K2 Hwy over East Spring Creek | 1937 | 2,616 | Good |
| K2 Hwy over Chikaskia River | 1990 | 2,616 | Good |
| K-2 Hwy over BNSF Railroad | 1992 | 2,544 | Good |
All bridges nearby: Harper County, KS bridge conditions · every bridge in Harper County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.