N31 over I80
GoodSarpy County, Nebraska · Gretna Intrchg · Structure no. S080 43297
- Built
- 1995
- 30 years old
- Condition
- Good
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 211 ft
- 2 main spans
- Daily traffic
- 7,800
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
N31 over I80 is a prestressed concrete continuous stringer/multi-beam or girder carrying N31 over I80 in Sarpy County, Nebraska. It was built in 1995, so it is 30 years old, younger than the Nebraska average of 47.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 7,800 vehicles a day, roughly 35% of them trucks, projected to reach 12,480 by 2038. The structure is 211 ft (64.3 m) long and 88 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N31 over I80 built?
It was built in 1995, making it 30 years old in 2025.
What condition is N31 over I80 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.
How much traffic does N31 over I80 carry?
About 7,800 vehicles per day (2018 count), of which roughly 35% are trucks.
How long is N31 over I80?
The structure is 211 ft (64.3 m) long with a longest span of 104 ft (31.7 m) and a deck 88 ft wide.
Who owns N31 over I80?
It is owned by the State Highway Agency.