N15 over Big Blue River
FairSeward County, Nebraska · 0S Seward · Structure no. S015 06605
- Built
- 1963
- 62 years old, rebuilt 2017
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 285 ft
- 3 main spans
- Daily traffic
- 9,255
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
N15 over Big Blue River is a steel continuous stringer/multi-beam or girder carrying N15 over Big Blue River in Seward County, Nebraska. It was built in 1963 and reconstructed in 2017, so it is 62 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 9,255 vehicles a day, roughly 7% of them trucks, projected to reach 9,440 by 2038. The structure is 285 ft (86.9 m) long and 33 ft wide. 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N15 over Big Blue River built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2017.
What condition is N15 over Big Blue River 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 January 2025.
How much traffic does N15 over Big Blue River carry?
About 9,255 vehicles per day (2018 count), of which roughly 7% are trucks.
How long is N15 over Big Blue River?
The structure is 285 ft (86.9 m) long with a longest span of 110 ft (33.5 m) and a deck 33 ft wide.
Who owns N15 over Big Blue River?
It is owned by the State Highway Agency.