N15 over Trib to Big Blue
FairSeward County, Nebraska · 1S Seward · Structure no. S015 06516
- Built
- 1965
- 60 years old, rebuilt 1977
- Condition
- Fair
- inspected January 2025
- Type
- Slab
- Concrete Continuous
- Length
- 84 ft
- 3 main spans
- Daily traffic
- 9,075
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
N15 over Trib to Big Blue is a concrete continuous slab carrying N15 over Trib to Big Blue in Seward County, Nebraska. It was built in 1965 and reconstructed in 1977, so it is 60 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 9,075 vehicles a day, roughly 8% of them trucks, projected to reach 12,524 by 2038. The structure is 84 ft (25.6 m) long and 33 ft wide. If it were closed, the detour would be 37.3 mi (60 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 Trib to Big Blue built?
It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1977.
What condition is N15 over Trib to Big Blue 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 Trib to Big Blue carry?
About 9,075 vehicles per day (2018 count), of which roughly 8% are trucks.
How long is N15 over Trib to Big Blue?
The structure is 84 ft (25.6 m) long with a longest span of 34 ft (10.4 m) and a deck 33 ft wide.
Who owns N15 over Trib to Big Blue?
It is owned by the State Highway Agency.