N15 over Big Blue River Trib
FairButler County, Nebraska · 18N Seward · Structure no. S015 08413
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected June 2024
- Type
- Culvert
- Concrete
- Length
- 22 ft
- 2 main spans
- Daily traffic
- 3,015
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
N15 over Big Blue River Trib is a concrete culvert carrying N15 over Big Blue River Trib in Butler County, Nebraska. It was built in 1974, so it is 51 years old, older than the Nebraska average of 47.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 3,015 vehicles a day, roughly 13% of them trucks, projected to reach 4,523 by 2038. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 31.1 mi (50 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N15 over Big Blue River Trib built?
It was built in 1974, making it 51 years old in 2025.
What condition is N15 over Big Blue River Trib in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.
How much traffic does N15 over Big Blue River Trib carry?
About 3,015 vehicles per day (2018 count), of which roughly 13% are trucks.
How long is N15 over Big Blue River Trib?
The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).
Who owns N15 over Big Blue River Trib?
It is owned by the State Highway Agency.