470th Lane over Mirage Flats Canal
Sheridan County, Nebraska · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 470th Lane over Mirage Flats Canal in Sheridan County, Nebraska, 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 1945, making it 80 years old at the 2025 inventory.
- It carries about 5 vehicles a day (traffic count year 2014).
- It is one of 11 of the 63 inventoried bridges in Sheridan County rated fair (17.5%); 0 (0.0%) 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 → (42.51664, -102.73362)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Concrete slab |
| Length | about 25 ft |
| Location | 11.7 mi SSE of HaySprings |
| NBI structure number | NKA-MF-010 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Nebraska department of transportation.
Busiest bridges in Sheridan County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US20/N87 over Stream | 1937 | 2,535 | Fair |
| US20/N87 over Stream | 1996 | 2,535 | Good |
| US20/N87 over Stream | 1962 | 2,535 | Good |
| US20/N87 over Stream | 1935 | 2,535 | Good |
| US20/N87 over Stream | 1935 | 2,535 | Good |
| US20/N87 over Stream | 1935 | 2,535 | Good |
All bridges nearby: Sheridan County, NE bridge conditions · every bridge in Sheridan County · Nebraska bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.