US81 over N Br Big Blue River
Polk County, Nebraska · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US81 over N Br Big Blue River in Polk County, Nebraska, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1985, making it 40 years old at the 2025 inventory.
- It carries about 3,950 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 29 of the 93 inventoried bridges in Polk County rated fair (31.2%); 10 (10.8%) 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 → (41.1056, -97.5983)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 126 ft |
| Location | Jct US81/N66 2.2N |
| NBI structure number | S081 07797 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Nebraska department of transportation.
Busiest bridges in Polk County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US81/N92 over Davis Creek | 2022 | 3,970 | Good |
| US81/N92 over Davis Creek | 2005 | 3,970 | Good |
| US81 over Prairie Creek | 1985 | 3,950 | Good |
| US81 over Davis Creek | 1985 | 3,385 | Good |
| N92 over Platte River Trib | 1939 | 1,360 | Fair |
| N92 over Clear Creek Trib | 1940 | 1,360 | Good |
All bridges nearby: Polk County, NE bridge conditions · every bridge in Polk County · Nebraska bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.