N21 over I80
GoodDawson County, Nebraska · Cozad Interchg · Structure no. S080 22249
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 290 ft
- 2 main spans
- Daily traffic
- 1,755
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
N21 over I80 is a steel continuous stringer/multi-beam or girder carrying N21 over I80 in Dawson County, Nebraska. It was built in 2008, so it is 17 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 1,755 vehicles a day, roughly 12% of them trucks, projected to reach 2,457 by 2038. The structure is 290 ft (88.4 m) long and 58 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N21 over I80 built?
It was built in 2008, making it 17 years old in 2025.
What condition is N21 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 October 2023.
How much traffic does N21 over I80 carry?
About 1,755 vehicles per day (2018 count), of which roughly 12% are trucks.
How long is N21 over I80?
The structure is 290 ft (88.4 m) long with a longest span of 144 ft (43.9 m) and a deck 58 ft wide.
Who owns N21 over I80?
It is owned by the State Highway Agency.